Issued Patents All Time
Showing 26–44 of 44 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D311612 | Foal feeder | — | 1990-10-23 |
| D311621 | Stable cart | — | 1990-10-23 |
| 4919220 | Cutting structures for steel bodied rotary drill bits | Michael C. Regan | 1990-04-24 |
| 4889017 | Rotary drill bit for use in drilling holes in subsurface earth formations | Joseph A. Gasan | 1989-12-26 |
| D302754 | Animal feeder | — | 1989-08-08 |
| 4823892 | Rotary drill bits | — | 1989-04-25 |
| 4790396 | Rotary drill bits for use in coring holes in subsurface formations | — | 1988-12-13 |
| D296948 | Bucket | — | 1988-07-26 |
| D296406 | Feed scoop | — | 1988-06-28 |
| 4733735 | Rotary drill bits | John D. Barr, Malcolm R. Taylor | 1988-03-29 |
| D294749 | Stock watering tank | — | 1988-03-15 |
| 4718505 | Rotary drill bits | — | 1988-01-12 |
| 4676324 | Drill bit and cutter therefor | John D. Barr | 1987-06-30 |
| D289452 | Corner bucket | — | 1987-04-21 |
| 4640375 | Drill bit and cutter therefor | John D. Barr | 1987-02-03 |
| D280857 | Dome top for a waste receptacle | Dale T. Maza | 1985-10-01 |
| 4505342 | Drill bit | John D. Barr | 1985-03-19 |
| 4420196 | Rotary filing device | — | 1983-12-13 |
| 4397363 | Rotary drill bits and method of use | — | 1983-08-09 |