Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D334245 | Fluorescent lamp | Harold L. Hough | 1993-03-23 |
| 5142191 | Aperture fluorescent lamp with press seal configuration | Robert Y. Pai, Joseph V. Lima | 1992-08-25 |
| 5116272 | Method and apparatus for forming apertures in fluorescent lamps | Harold L. Hough, Robert Y. Pai | 1992-05-26 |
| 5086249 | Compact discharge lamp unit and method for manufacturing same | Harold L. Hough | 1992-02-04 |
| D321857 | Fluorescent lamp holder or the like | Robert Y. Pai | 1991-11-26 |
| D318326 | Electric forced air or gas heater | Jonathan B. Arold, Joan L. Mishou, Edward A. Webb | 1991-07-16 |
| 4990821 | Multicolor picture element with merged colors | Joseph V. Lima, Robert Y. Pai | 1991-02-05 |
| D313659 | Fluorescent lamp or the like | Harold L. Hough | 1991-01-08 |
| 4937487 | Picture element lamp assembly for information display system | Harold L. Hough, Thomas Haraden | 1990-06-26 |
| 4934768 | Picture element lamp assembly for information display system | — | 1990-06-19 |
| 4878159 | Fluorescent lamp having removable jacket | Harold L. Hough | 1989-10-31 |
| D291921 | Lamp | Peter R. Gagnon | 1987-09-15 |
| D291124 | Fluorescent lamp or the like | Harold L. Hough | 1987-07-28 |
| D290513 | Fluorescent lamp | Harold L. Hough | 1987-06-23 |
| D290110 | Adaptor base for fluorescent lamp or the like | Harold L. Hough | 1987-06-02 |
| D290045 | Electric lamp | Harold L. Hough | 1987-05-26 |
| 4647809 | Electric lamp with self-mounting frame-assembly and method of constructing same | Peter R. Gagnon | 1987-03-03 |
| 4608624 | Projection lamp unit with separable lamp capsule | Harold L. Hough | 1986-08-26 |
| 4500948 | One-piece frame for an electric lamp | Peter R. Gagnon | 1985-02-19 |
| 4482942 | Projection unit including glass reflector with insulative cap member | Harold L. Hough, Richard B. Martenson | 1984-11-13 |
| 4403276 | Front loading projection unit with snap in capsule | — | 1983-09-06 |
| 4392189 | Front loading projection unit with threaded resilient retention member | Harold L. Hough | 1983-07-05 |
| 4389700 | Projection unit with separable lamp capsule and slidable means for ejecting same | Harold L. Hough | 1983-06-21 |
| 4388679 | Projection lighting unit with glass reflector capable of dual insertion | Harold L. Hough | 1983-06-14 |
| 4384319 | Projection lighting unit with rear loading lamp capsule member | Harold L. Hough, C. Edward Kowalski | 1983-05-17 |