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- Edgar_Gretener abstract "Edgar Gretener (March 2, 1902 in Lucerne – October 21, 1958 in Zurich) was a Swiss electrical engineer.Gretener was the twelfth of 14 siblings. He studied electrical engineering at Swiss Federal Institute of Technology (ETH Zurich), where he received his Ph.D. in 1929. He then became head of development at the Albiswerk factory in Zurich. In 1930, he worked as head of the telegraph laboratory of Siemens & Halske in Berlin. There he got in contact with Fritz Fischer (physicist), another Swiss engineer, working as a manager at the central research labs of Siemens. When Fritz Fischer got the call to become professor at the ETH Zurich in 1932, he made Gretener his chief assistant a few years later. Fischer invented the Eidophor video projection system. Gretener was in charge of its implementation.When World War II started, the Swiss authorities asked Gretener to develop an encryption device for teleprinters. For this purpose the Dr. Edgar Gretener AG was set up as a company in 1943. Gretener got absorbed by this new challenge. As his replacement, Hugo Thiemann continued the development of the Eidophor system at the ETH. When Fischer died unexpectely in 1947, Thiemann and the Eidophor project were transferred to Gretener's company. It now had two lines of R&D: encryption devices and Eidophor, which still needed development to make it a viable product. Finally, the marketing effort led to first contracts for this new wide-screen video projection system.The untimely death of Gretener in 1958 led to the renaming of his company, which continued under new ownership as GRETAG AG.".
- Edgar_Gretener birthDate "1902-03-02".
- Edgar_Gretener birthYear "1902".
- Edgar_Gretener deathDate "1958-10-21".
- Edgar_Gretener deathYear "1958".
- Edgar_Gretener thumbnail GC_805.jpg?width=300.
- Edgar_Gretener wikiPageID "36993688".
- Edgar_Gretener wikiPageLength "2484".
- Edgar_Gretener wikiPageOutDegree "15".
- Edgar_Gretener wikiPageRevisionID "662665372".
- Edgar_Gretener wikiPageWikiLink Berlin.
- Edgar_Gretener wikiPageWikiLink Category:1902_births.
- Edgar_Gretener wikiPageWikiLink Category:1958_deaths.
- Edgar_Gretener wikiPageWikiLink Category:ETH_Zurich_alumni.
- Edgar_Gretener wikiPageWikiLink Category:Swiss_cryptographers.
- Edgar_Gretener wikiPageWikiLink Category:Swiss_electrical_engineers.
- Edgar_Gretener wikiPageWikiLink ETH_Zurich.
- Edgar_Gretener wikiPageWikiLink Eidophor.
- Edgar_Gretener wikiPageWikiLink Fritz_Fischer_(physicist).
- Edgar_Gretener wikiPageWikiLink Hugo_Thiemann.
- Edgar_Gretener wikiPageWikiLink Lucerne.
- Edgar_Gretener wikiPageWikiLink Siemens_&_Halske.
- Edgar_Gretener wikiPageWikiLink Zürich.
- Edgar_Gretener wikiPageWikiLink File:Eidophor_front.JPG.
- Edgar_Gretener wikiPageWikiLink File:GC_805.jpg.
- Edgar_Gretener wikiPageWikiLinkText "Edgar Gretener".
- Edgar_Gretener dateOfBirth "1902-03-02".
- Edgar_Gretener dateOfDeath "1958-10-21".
- Edgar_Gretener name "Gretener, Edgar".
- Edgar_Gretener shortDescription "Swiss cryptographer".
- Edgar_Gretener wikiPageUsesTemplate Template:Authority_control.
- Edgar_Gretener wikiPageUsesTemplate Template:More_footnotes.
- Edgar_Gretener wikiPageUsesTemplate Template:Persondata.
- Edgar_Gretener description "Swiss cryptographer".
- Edgar_Gretener description "Swiss cryptographer".
- Edgar_Gretener subject Category:1902_births.
- Edgar_Gretener subject Category:1958_deaths.
- Edgar_Gretener subject Category:ETH_Zurich_alumni.
- Edgar_Gretener subject Category:Swiss_cryptographers.
- Edgar_Gretener subject Category:Swiss_electrical_engineers.
- Edgar_Gretener type Agent.
- Edgar_Gretener type Person.
- Edgar_Gretener type Scientist.
- Edgar_Gretener type Person.
- Edgar_Gretener type Cryptographer.
- Edgar_Gretener type Mathematician.
- Edgar_Gretener type Scientist.
- Edgar_Gretener type Agent.
- Edgar_Gretener type NaturalPerson.
- Edgar_Gretener type Thing.
- Edgar_Gretener type Q215627.
- Edgar_Gretener type Q5.
- Edgar_Gretener type Person.
- Edgar_Gretener comment "Edgar Gretener (March 2, 1902 in Lucerne – October 21, 1958 in Zurich) was a Swiss electrical engineer.Gretener was the twelfth of 14 siblings. He studied electrical engineering at Swiss Federal Institute of Technology (ETH Zurich), where he received his Ph.D. in 1929. He then became head of development at the Albiswerk factory in Zurich. In 1930, he worked as head of the telegraph laboratory of Siemens & Halske in Berlin.".
- Edgar_Gretener label "Edgar Gretener".
- Edgar_Gretener sameAs Q121705.
- Edgar_Gretener sameAs Edgar_Gretener.
- Edgar_Gretener sameAs Edgar_Gretener.
- Edgar_Gretener sameAs m.0n49cvl.
- Edgar_Gretener sameAs Q121705.
- Edgar_Gretener wasDerivedFrom Edgar_Gretener?oldid=662665372.
- Edgar_Gretener depiction GC_805.jpg.
- Edgar_Gretener givenName "Edgar".
- Edgar_Gretener isPrimaryTopicOf Edgar_Gretener.
- Edgar_Gretener name "Edgar Gretener".
- Edgar_Gretener name "Gretener, Edgar".
- Edgar_Gretener surname "Gretener".