Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4928032 | Means for converting a lamp with a screw-type base into a lamp with a bi-pin base | Frederick Hetzel | 1990-05-22 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4928032 | Means for converting a lamp with a screw-type base into a lamp with a bi-pin base | Frederick Hetzel | 1990-05-22 |