Berthold Birk — 2 Patents at Mannesmann Vdo Ag

Berthold Birk has been granted 2 US patents while listed as an inventor at Mannesmann Vdo Ag. The first was granted in 2001 and the most recent in February 2002. Berthold Birk ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Berthold Birk in Aschaffenburg, DE.

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Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
6351080	Circuitry for dimming a fluorescent lamp	Gunter Hahlganss, Walter Kares, Ulrich Roskoni	2002-02-26
6313585	Method for dimming a fluorescent lamp arranged in the secondary circuit of a transformer and arrangement to implement said method	—	2001-11-06

Berthold Birk — 2 Patents

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