Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4583277 | Method utilizing a cigar lighter socket shell driver tool | — | 1986-04-22 |
| 4497226 | Cigar lighter socket shell driver tool | — | 1985-02-05 |
| 4291560 | High-production method for making grooved resistance ribbon for electrical heating coils | — | 1981-09-29 |
| 4283703 | Vibration-resistant probe-like electrical heaters | — | 1981-08-11 |
| 4230931 | Electric cigar lighter | Donald J. Mattis | 1980-10-28 |
| 4207455 | Automatic electric cigar lighter with base switch | Donald J. Mattis | 1980-06-10 |
| 4204108 | Manual electric cigar lighter | Donald J. Mattis | 1980-05-20 |
| 4204109 | Automatic electric cigar lighter | Donald J. Mattis | 1980-05-20 |
| 4184351 | High-production method and apparatus for making grooved resistance ribbon for electrical heating coils | — | 1980-01-22 |
| 4184350 | High-production method and apparatus for making spiral convolution electrical heating coils | — | 1980-01-22 |