St. John; Richard C.
Patent Applications and Registrations
Patent applications and USPTO patent grants for St. John; Richard C..The latest application filed is for "adjustable locked center and dynamic tensioner".
- St. John; Richard C. - North Canton OH
- St. John; Richard C. - N. Canton OH
| Patent | Date |
|---|---|
| Adjustable locked center and dynamic tensioner Grant 4,957,471 - St. John September 18, 1 | 1990-09-18 |
| Adjustable tensioner for belt and chain drives Grant 4,767,383 - St. John August 30, 1 | 1988-08-30 |
| Belt tensioner system Grant 4,557,709 - St. John December 10, 1 | 1985-12-10 |
| Centrifugal clutch construction Grant 4,226,320 - St. John October 7, 1 | 1980-10-07 |
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