Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE37975 | Directional boring head with blade assembly | Brent G. Stephenson, Arthur D. Deken, Cody L. Sewell | 2003-02-04 |
| 5148880 | Apparatus for drilling a horizontal controlled borehole in the earth | Douglas W. Lee, Arthur D. Deken, James E. Franklin | 1992-09-22 |
| 5040817 | Trailer hitch assembly | — | 1991-08-20 |
| 4983960 | Porch or entry switch providing emergency signals | — | 1991-01-08 |
| 4953638 | Method of and apparatus for drilling a horizontal controlled borehole in the earth | — | 1990-09-04 |
| RE32253 | Interactive user-machine interface method and apparatus for copier/duplicator | Michael V. Bartulis, Edwin J. Smura, Herbert B. Bebb, Anthony J. Ciuffini, Lionel W. Mosing | 1986-09-30 |
| 4430924 | Petroleum pumping unit | Wilbur D. Garrels | 1984-02-14 |
| 4332464 | Interactive user-machine interface method and apparatus for copier/duplicator | Michael V. Bartulis, Edwin J. Smura, Herbert B. Bebb, Anthony J. Ciuffini, Lionel W. Mosing | 1982-06-01 |