Mechanical means for producing a desired natural frequency of operation of the contacts

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Patents Grantslast 30 patents

Information Patent Grant
Switchgear operating mechanism
- Patent number 9,508,514
- Issue date Nov 29, 2016
- Kabushiki Kaisha Toshiba
- Yoshiaki Ohda
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
3138745
- Patent number 3,138,745
- Issue date Jun 23, 1964
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
2368201
- Patent number 2,368,201
- Issue date Jan 30, 1945
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
2287539
- Patent number 2,287,539
- Issue date Jun 23, 1942
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
1779423
- Patent number 1,779,423
- Issue date Oct 28, 1930
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
1727968
- Patent number 1,727,968
- Issue date Sep 10, 1929
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
1641256
- Patent number 1,641,256
- Issue date Sep 6, 1927
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
1328825
- Patent number 1,328,825
- Issue date Jan 27, 1920
- H01 - BASIC ELECTRIC ELEMENTS