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Hamburg, DE
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last 30 patents
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Patent Grant
Radiation measuring device comprising an ionization chamber
Patent number
6,236,711
Issue date
May 22, 2001
U.S. Philips Corporation
Waldemar Lumma
G01 - MEASURING TESTING
Information
Patent Grant
X-ray apparatus comprising a photoconductor and a charging device
Patent number
5,686,732
Issue date
Nov 11, 1997
U.S. Philips Corporation
Waldemar Lumma
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
X-ray apparatus comprising a photoconductor and a corona charging d...
Patent number
5,467,378
Issue date
Nov 14, 1995
U.S. Philips Corporation
Waldemar Lumma
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method and device for compensating for differences in sensitivities...
Patent number
5,136,165
Issue date
Aug 4, 1992
U.S. Philips Corporation
Waldemar Lumma
G01 - MEASURING TESTING