Un peu d'histoire trouvé sur le net grace au site NAWCC.ORG :
here is info from the Kochmann European Trademark Index:
"Josef Kaiser b. 07.03.1875 in Lenzkirch, Black Forest d. 01.10.1940. Owner of Kaiser Uhrenfabrik (Clockfactory) Villingen, Germany. Founded 1922 an alarm clock factory, based on his excellent first hand knowledge in the clock manufacturing field, produced 6000 clocks daily in 1930. Sons Oskar and Franz assumed management. In 1945 the entire factory was dismantled. A new start made in 1948, but by 1973 the company failed due to Japanese competition and was closed for good."
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I have seen many Kaiser clocks in all kind of styles with the majority being in the novelty category. Alarm clocks, boudoir clocks, birdcage clocks, and small table clocks appear to be the most prevalent. Kaiser also made the Kaiser "Universe" and "World" model 400-Day clocks from about 1954 to 1962.
Terwilliger reports that only a few thousand of these were made because of a trademark conflict that shut down sales to the U.S. However, it is very evident that these very impressive clocks continued to be produced in quantity and sold in many other parts of the world. My estimate is now in the order of perhaps 10,000 being made in total.
Also, Terwilliger stated the Kaiser Universe might be the best 400-Day clock ever made; however I think he may not have seen the Claude Grivolas (France) 400-Day clocks before making this statement. The Grivolas clocks in my opinion are far and away superior to the Kaiser Universe, not only in technical perfection but also in many instances in appearance and design.
If you will do an eBay search for "Kaiser Clock" (Titles and Descriptions) you will find many of these clocks listed for sale, most of them made after WW2.
John Hubby