Brinkhoff; Carl H.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Brinkhoff; Carl H..The latest application filed is for "universal ear plug".
- Brinkhoff; Carl H. - Pittsburgh PA
| Patent | Date |
|---|---|
| Universal ear plug Grant 4,564,009 - Brinkhoff January 14, 1 | 1986-01-14 |
| Riot faceshield assembly Grant 4,536,892 - Brinkhoff , et al. August 27, 1 | 1985-08-27 |
| Earplug package and method of making it Grant 4,053,051 - Brinkhoff October 11, 1 | 1977-10-11 |
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