Larson; Willis August
Patent Applications and Registrations
Patent applications and USPTO patent grants for Larson; Willis August.The latest application filed is for "membrane switch apparatus".
- Larson; Willis August - Mequon WI
| Patent | Date |
|---|---|
| Membrane switch apparatus Grant 4,034,176 - Larson July 5, 1 | 1977-07-05 |
| Keyboard membrane switch having threshold force structure Grant 4,017,697 - Larson April 12, 1 | 1977-04-12 |
| Membrane keyboard apparatus Grant 3,995,126 - Larson November 30, 1 | 1976-11-30 |
| Membrane keyboard apparatus having common apertured electrode, aperture inserted electrodes and conductive bubble contactors Grant 3,988,551 - Larson October 26, 1 | 1976-10-26 |
| Membrane switch apparatus having sequential bridging contact arrangement Grant 3,987,259 - Larson October 19, 1 | 1976-10-19 |
| Method of fabricating keyboard apparatus Grant 3,981,757 - Larson September 21, 1 | 1976-09-21 |
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