Issued Patents All Time
Showing 26–50 of 54 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4655122 | Aerodynamic shape with improved lift characteristics | — | 1987-04-07 |
| RE32362 | Fire damper and method of fabrication | — | 1987-02-24 |
| 4555981 | Damper operator for use with air, smoke and fire dampers | — | 1985-12-03 |
| 4494449 | Insulated lay-in diffuser | — | 1985-01-22 |
| 4474167 | Latch for a butterfly damper | — | 1984-10-02 |
| 4472999 | Damper operator for use with air, smoke and fire dampers | — | 1984-09-25 |
| 4442862 | Link bar operator for rotating blade dampers | — | 1984-04-17 |
| 4404990 | Economy, angle-blade damper kit | — | 1983-09-20 |
| 4390123 | Thermally activated, automatic, single blade damper and damper operator | — | 1983-06-28 |
| 4372485 | Thermally activated, automatic damper and damper operator | — | 1983-02-08 |
| 4372342 | Balancing damper with quick set adjustment bracket | — | 1983-02-08 |
| 4338967 | Universal link bar operator and actuator for rotating blade air, smoke, and fire dampers | — | 1982-07-13 |
| 4304427 | Duct-damper interface adaptor | — | 1981-12-08 |
| 4301569 | Quadrant operator | — | 1981-11-24 |
| 4295486 | Low cost, diffuser concealable, volume control, heat responsive, resettable, butterfly damper operator | — | 1981-10-20 |
| 4287638 | Inside/outside link | — | 1981-09-08 |
| 4277870 | Method for installing an angle blade damper | — | 1981-07-14 |
| 4263930 | Diffuser concealable, volume control, heat-responsive, semi-automatic resetting, butterfly damper and operator | — | 1981-04-28 |
| 4241748 | Butterfly smoke/fire damper | — | 1980-12-30 |
| 4219185 | Rotating blade fire damper | — | 1980-08-26 |
| 4218910 | Press brake | — | 1980-08-26 |
| 4219041 | Electro-thermal fire protection locking clip | John A. McCabe | 1980-08-26 |
| 4213365 | Press | — | 1980-07-22 |
| 4213227 | Telescoping heat responsive releasing means | — | 1980-07-22 |
| 4200954 | Telescoping heat responsive releasing means | — | 1980-05-06 |