Root; James R.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Root; James R..The latest application filed is for "control damper".
- Root; James R. - Independence MO
| Patent | Date |
|---|---|
| Control damper Grant RE30,204 - Root February 5, 1 | 1980-02-05 |
| Ice hammer Grant D246,755 - Root December 27, 1 | 1977-12-27 |
| Control damper Grant 3,996,952 - Root December 14, 1 | 1976-12-14 |
| Damper construction and spring Grant 3,941,179 - Root March 2, 1 | 1976-03-02 |
| Control Damper Construction Grant 3,817,485 - Root June 18, 1 | 1974-06-18 |
| Backdraft Damper Grant 3,738,254 - Root June 12, 1 | 1973-06-12 |
| Control Damper Construction Grant 3,718,081 - Root February 27, 1 | 1973-02-27 |
| Wrap-around Damper Frame Grant 3,677,517 - Root , et al. July 18, 1 | 1972-07-18 |
| Smoke Damper Grant 3,580,321 - Root May 25, 1 | 1971-05-25 |
| Inlet Vane Damper Grant 3,566,916 - Root March 2, 1 | 1971-03-02 |
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