Issued Patents All Time
Showing 126–130 of 130 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4690365 | Jack stud | Richard O. Barton, Oscar H. Schaefer | 1987-09-01 |
| 4690563 | Hole centration gage | Richard O. Barton, Michael T. Bergin | 1987-09-01 |
| 4488809 | Planizing target | Richard O. Barton | 1984-12-18 |
| 4338031 | Laser grade, elevation, curve surveying system | Richard O. Barton | 1982-07-06 |
| 4330212 | Triaxis laser alignment system and method | — | 1982-05-18 |