with special gasfilling

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Patents Grantslast 30 patents

Information Patent Grant
3758769
- Patent number 3,758,769
- Issue date Sep 11, 1973
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
2543227
- Patent number 2,543,227
- Issue date Feb 27, 1951
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
2104680
- Patent number 2,104,680
- Issue date Jan 4, 1938
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
2081776
- Patent number 2,081,776
- Issue date May 25, 1937
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
2046096
- Patent number 2,046,096
- Issue date Jun 30, 1936
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
1697021
- Patent number 1,697,021
- Issue date Jan 1, 1929
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
1548812
- Patent number 1,548,812
- Issue date Aug 4, 1925
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
1333665
- Patent number 1,333,665
- Issue date Mar 16, 1920
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR