Helmut Winnacker

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Burgdorf, DT

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Patents Grantslast 30 patents

Information Patent Grant
Housing assembly for an underwater camera with a flash device
- Patent number 4,035,816
- Issue date Jul 12, 1977
- Preussag Aktiengesellschaft
- Helmut Winnacker
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Apparatus for charging a hermetically sealed electrical energy source
- Patent number 3,939,391
- Issue date Feb 17, 1976
- Preussag Aktiengesellschaft
- Helmut Winnacker
- G01 - MEASURING TESTING