Amthor; Helmut K.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Amthor; Helmut K..The latest application filed is for "battery assembly".
- Amthor; Helmut K. - Rocky River OH
| Patent | Date |
|---|---|
| Battery assembly Grant 4,959,280 - Amthor September 25, 1 | 1990-09-25 |
| Squeezable flashlight Grant 4,731,712 - Amthor March 15, 1 | 1988-03-15 |
| Pressure Relief Vent Valve For A Fluid Tight Sealed Container Especially An Alkaline Galvanic Cell Grant 3,664,878 - Amthor May 23, 1 | 1972-05-23 |
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