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Patent applications and USPTO patent grants for Schaefer; Donald W..The latest application filed is for "implantable hearing aid and method of improving hearing".
Patent | Date |
---|---|
Implantable hearing aid and method of improving hearing Grant 4,850,962 - Schaefer July 25, 1 | 1989-07-25 |
Implantable hearing aid and method of improving hearing Grant 4,729,366 - Schaefer March 8, 1 | 1988-03-08 |
Rotary drum for processing sheet materials Grant 4,437,659 - Caron , et al. March 20, 1 | 1984-03-20 |
Method and apparatus for applying a viscous fluid to a substrate Grant 4,299,186 - Pipkin , et al. November 10, 1 | 1981-11-10 |
Method for applying a viscous fluid to a substrate Grant 4,142,010 - Pipkin , et al. February 27, 1 | 1979-02-27 |
Article Storage And Retrieval Grant 3,854,604 - Peterson , et al. December 17, 1 | 1974-12-17 |
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