Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4812674 | Safety gate limit switch using Hall effect transducer | Richard T. Guttman, David Mark Pendley, William C. Keys | 1989-03-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4812674 | Safety gate limit switch using Hall effect transducer | Richard T. Guttman, David Mark Pendley, William C. Keys | 1989-03-14 |