Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D271762 | Telephone switch-connector assembly | Frank B. Manning, Peter R. Kramer | 1983-12-13 |
| D271301 | Telephone switch-connector unit | Frank B. Manning, Peter R. Kramer | 1983-11-08 |
| D271302 | Telephone switch-connector device | Frank B. Manning, Peter R. Kramer | 1983-11-08 |