Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5588257 | Garage door operator | Richard P. Spens, Dana J. Lowell, Chin-Feng Chan, Ming-Hwa Shou | 1996-12-31 |
| 5541585 | Security system for controlling building access | Daniel V. Meyvis | 1996-07-30 |
| 5285136 | Continuously monitored supplemental obstruction detector for garage door operator | — | 1994-02-08 |
| 5282337 | Garage door operator with pedestrian light control | Daniel V. Meyvis | 1994-02-01 |
| 5252960 | Secure keyless entry system for automatic garage door operator | — | 1993-10-12 |
| 5218282 | Automatic door operator including electronic travel detection | — | 1993-06-08 |
| 5191268 | Continuously monitored supplemental obstruction detector for garage door operator | — | 1993-03-02 |
| 4808995 | Accessory-expandable, radio-controlled, door operator with multiple security levels | John Clark | 1989-02-28 |
| 4464651 | Home security and garage door operator system | — | 1984-08-07 |
| 4433274 | Home security and garage door operator system | — | 1984-02-21 |
| 4360801 | Home security and garage door operator system | — | 1982-11-23 |