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Donald R. Martin
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Waukesha, WI, US
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Patents Grants
last 30 patents
Information
Patent Grant
Switch mechanism operating rod
Patent number
4,883,930
Issue date
Nov 28, 1989
Cooper Power Systems, Inc.
Donald R. Martin
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Interrupter operating mechanism
Patent number
4,845,324
Issue date
Jul 4, 1989
Cooper Power Systems, Inc.
Donald R. Martin
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Switchgear enclosure with improved supporting frame and improved ac...
Patent number
4,821,143
Issue date
Apr 11, 1989
Cooper Power Systems, Inc.
Nils V. Holmgren
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Suicide switch/interrupter with variable volume chamber and puffer...
Patent number
4,780,581
Issue date
Oct 25, 1988
RTE Corporation
Nils V. Holmgren
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Load interrupter
Patent number
4,553,008
Issue date
Nov 12, 1985
Cooper Industries, Inc.
Edward F. Veverka
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Self-flow generating gas interrupter
Patent number
4,517,425
Issue date
May 14, 1985
McGraw-Edison Company
Donald R. Martin
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Distribution class puffer interrupter
Patent number
4,489,226
Issue date
Dec 18, 1984
McGraw-Edison Company
Nils V. Holmgren
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Self-generating gas flow interrupter
Patent number
4,465,910
Issue date
Aug 14, 1984
McGraw-Edison Company
Donald R. Martin
H01 - BASIC ELECTRIC ELEMENTS