Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4442351 | Optoelectronic incremental position encoder | George F. Pfeifer, George R. Koonce | 1984-04-10 |
| 4342910 | Optoelectronic absolute position encoder with an in-line gray code controlling vehicle acceleration | George F. Pfeifer, George R. Koonce | 1982-08-03 |