Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4771694 | Blasting signal transmission tube connector | Stephen W. Bartholomew, Daniel C. Rontey, Clifford N. Kaiser | 1988-09-20 |
| 4742773 | Blasting signal transmission tube delay unit | Stephen W. Bartholomew, Daniel C. Rontey, Craig F. Adams | 1988-05-10 |
| 4730560 | Combination blasting signal transmission tube connector and delay assembly | Stephen W. Bartholomew, Daniel C. Rontey, Clifford N. Kaiser | 1988-03-15 |
| 4716831 | Detonating cord connector | Stephen W. Bartholomew, Daniel C. Rontey | 1988-01-05 |