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Willis August Larson
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Mequon, WI, US
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Patents Grants
last 30 patents
Information
Patent Grant
Membrane switch apparatus
Patent number
4,034,176
Issue date
Jul 5, 1977
Magic Dot, Inc.
Willis August Larson
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Keyboard membrane switch having threshold force structure
Patent number
4,017,697
Issue date
Apr 12, 1977
Globe-Union Inc.
Willis August Larson
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Touch actuated electronic switch
Patent number
4,002,923
Issue date
Jan 11, 1977
Magic Dot, Inc.
Willis A. Larson
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Membrane keyboard apparatus
Patent number
3,995,126
Issue date
Nov 30, 1976
Magic Dot, Inc.
Willis August Larson
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Touch actuated electronic switch including protection from high pot...
Patent number
3,992,634
Issue date
Nov 16, 1976
Magic Dot, Inc.
Willis A. Larson
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Membrane keyboard apparatus having common apertured electrode, aper...
Patent number
3,988,551
Issue date
Oct 26, 1976
Magic Dot, Inc.
Willis August Larson
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Membrane switch apparatus having sequential bridging contact arrang...
Patent number
3,987,259
Issue date
Oct 19, 1976
Globe-Union Inc.
Willis August Larson
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method of fabricating keyboard apparatus
Patent number
3,981,757
Issue date
Sep 21, 1976
Globe-Union Inc.
Willis August Larson
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Touch actuated electronic switch
Patent number
3,947,696
Issue date
Mar 30, 1976
Magic Dot, Inc.
Willis A. Larson
H03 - BASIC ELECTRONIC CIRCUITRY