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Patent applications and USPTO patent grants for Haefner; Hans W..The latest application filed is for "trailer coupling with force sensing means".
Patent | Date |
---|---|
Trailer coupling with force sensing means Grant 5,060,965 - Haefner , et al. October 29, 1 | 1991-10-29 |
Optical sensor Grant 5,012,679 - Haefner May 7, 1 | 1991-05-07 |
Transducer for pressures and/or vibrations and method for manufacturing thereof Grant 4,984,467 - Haefner January 15, 1 | 1991-01-15 |
Method and apparatus for measuring the pressure of a fluid Grant 4,491,016 - Haefner January 1, 1 | 1985-01-01 |
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