Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5241238 | Electric lamp with low torque threaded base | Arnold E. Westlund, Jr. | 1993-08-31 |
| 4990553 | Basing cement containing silicon ether | John D. Curhan, David H. Fox | 1991-02-05 |
| 4754193 | Mercury dispenser for arc discharge lamps | James L. Holmes, Billy W. Tuttle | 1988-06-28 |
| D291322 | Multilamp photoflash unit | Boyd G. Brower, Dan E. Picini | 1987-08-11 |
| 4656396 | Fluorescent lamp circuit breaker with low contact resistance | — | 1987-04-07 |
| 4646050 | Glow discharge starter | Michael R. Kling | 1987-02-24 |
| 4550270 | Tungsten halogen lamp having a fine-wire filament and a hydrogen-impervious envelope | Stephen F. Kimball, Robert M. Griffin | 1985-10-29 |
| D270575 | Multilamp photoflash unit | David R. Broadt | 1983-09-13 |
| 4390935 | Projection unit with separable lamp capsule and means for ejecting same | George B. Kendrick, Pratap P. Chavan | 1983-06-28 |
| 4371913 | Reflector lamp module for photoflash array | David R. Broadt | 1983-02-01 |
| 4334856 | Photoflash array with selective pairing of lamps | David R. Broadt | 1982-06-15 |
| 4326241 | Multilamp photoflash unit | David R. Broadt, Donald W. Hartman, John W. Shaffer | 1982-04-20 |
| 4303963 | Multilamp photoflash unit with protection against electrostatic charges | Donald W. Hartman, John W. Shaffer | 1981-12-01 |
| 4302794 | Linear multilamp photoflash unit | Donald W. Hartman | 1981-11-24 |
| D261811 | Linear multilamp photoflash unit | Donald W. Hartman | 1981-11-10 |
| D261683 | Linear multilamp photoflash unit | Donald W. Hartman | 1981-11-03 |
| 4282559 | Photoflash unit having flashlamps using looped lead-in wires for retention | Boyd G. Brower, Donald H. Pfefferle, James L. Holmes | 1981-08-04 |
| 4238814 | Cover for multilamp photoflash unit | Daniel W. Bricker, John W. Shaffer, Donald W. Hartman | 1980-12-09 |
| 4200901 | Multilamp photoflash unit with electrostatic protection | John W. Shaffer, Daniel W. Bricker | 1980-04-29 |