Buettner; Gerhard
Patent Applications and Registrations
Patent applications and USPTO patent grants for Buettner; Gerhard.The latest application filed is for "hearing aid comprising a contact spring arrangement".
- Buettner; Gerhard - Gorssenseebach DE
- Buettner; Gerhard - Grossenseebach DE
| Patent | Date |
|---|---|
| Hearing aid comprising a contact spring arrangement Grant 4,947,439 - Buettner August 7, 1 | 1990-08-07 |
| Hearing aid with a contact spring configuration Grant 4,941,180 - Buettner July 10, 1 | 1990-07-10 |
| Hinge for a hearing aid cover Grant 4,831,655 - Buettner May 16, 1 | 1989-05-16 |
| Hearing aid with a housing to be worn behind the ear Grant 4,638,125 - Buettner January 20, 1 | 1987-01-20 |
| Miniature hearing aid Grant 4,354,065 - Buettner October 12, 1 | 1982-10-12 |
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