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Leonard Woldring
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Eindhoven, NL
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last 30 patents
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Patent Grant
Electric device comprising at least one low-pressure mercury vapor...
Patent number
4,443,739
Issue date
Apr 17, 1984
U.S. Philips Corporation
Leonard Woldring
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Discharge lamp unit including integral ballast
Patent number
4,353,007
Issue date
Oct 5, 1982
U.S. Philips Corporation
Jozef C. Moerkens
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Inductive stabilizing ballast for a gas and/or vapor discharge lamp
Patent number
4,020,439
Issue date
Apr 26, 1977
U.S. Philips Corporation
Alexander Joseph Gerardus Thiessens
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Electric device for starting and supplying a gas-and/or vapor disch...
Patent number
4,017,761
Issue date
Apr 12, 1977
U.S. Philips Corporation
Leonard Woldring
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Method of making an inductive stabilizing ballast for a gas and/or...
Patent number
3,947,955
Issue date
Apr 6, 1976
U.S. Philips Corporation
Alexander Joseph Gerardus Thiessens
H01 - BASIC ELECTRIC ELEMENTS