Die Suche ergab 6 Treffer

von llamare89
18.09.2022, 02:30
Forum: Historisches
Thema: Willy von Unruh
Antworten: 47
Zugriffe: 38598

Re: Willy von Unruh

Hello Ecki, As the link to the file related to the 21st class in the DPK classification in the web.archive.org website I had given in my previous post seems no longer work, I have added the corresponding attached file below I downloaded yesterday. The most relevant subclass in the document is "21g" ...
von llamare89
17.09.2022, 03:57
Forum: Historisches
Thema: Willy von Unruh
Antworten: 47
Zugriffe: 38598

Re: Willy von Unruh

Hello Ecki, Among the DRGM you searched for, it is interesting to filter the results with respect to the class scheme (number in bold below) in the Deutsche Patentklassifikation (DPK) : DRGM 559525 III / 1913 ( 54 g)-1152    (Sold by Willy Unruh to Alfred Kohn when HAPIKO was founded on August 9, 19...
von llamare89
16.09.2022, 02:58
Forum: Historisches
Thema: Willy von Unruh
Antworten: 47
Zugriffe: 38598

Re: Willy von Unruh

Hello Ecki and Rudi, I searched the Finnish, Dannish and Hungarian patent databases (see links below) but I found no patent related to the Stromerzeuger. Dannish patents Hungarian patents Finnish patents Regarding Ludwig Stange, I was more lucky and I found this :  https://digital.zlb.de/viewer/imag...
von llamare89
13.09.2022, 06:29
Forum: Historisches
Thema: Willy von Unruh
Antworten: 47
Zugriffe: 38598

Re: Willy von Unruh

Hello Ecki, You can drag my link to the discussion thread. I reread the articles related to the Unruh trial in 1924 which mention a technician named Ludwig STANGE who would have worked with Willi v. UNRUH since 1911 and would be the actual inventor of the first stromerzeuger. Did you find historical...
von llamare89
29.08.2022, 16:41
Forum: Historisches
Thema: Willy von Unruh
Antworten: 47
Zugriffe: 38598

Re: Willy von Unruh

Hello Ecki,

Good News!

I finally received a scan of the patent from the National Archives of Luxembourg.

Best regards,

llamare89

 
von llamare89
14.08.2022, 19:45
Forum: Historisches
Thema: Willy von Unruh
Antworten: 47
Zugriffe: 38598

Re: Willy von Unruh

Hello Ecki, I have found the following reference to a patent from Robert NORRBY seemingly regarding the power generator in an administrative document from Luxembourg (see  https://docplayer.org/77860117-Memorial-memorial-grossherzogtums-luxemburg-grand-duche-de -luxembourg-jos-bech-vendredi-17-mars-...