| Patents for Robert J. O. Simpson |
Patents 1 -
8
of 8
      |
| Picture | Number | Date | Patentee | Title |
| | 1,625,401 | Apr. 19, 1927 | R.J. Simpson | Cylinder Gauge |
| | 1,625,766 | Apr. 19, 1927 | R.J. Simpson | Dial Indicator |
 | 1,625,767 | Apr. 19, 1927 | R.J. Simpson | Micrometer Caliper |
 | 1,698,566 | Jan. 08, 1929 | R.J. Simpson | Case for measuring tapes and the like |
| | 1,821,398 | Sep. 01, 1931 | R.J. Simpson | Micrometer Calipers |
| | 1,847,906 | Mar. 01, 1932 | R.J. Simpson | Cylinder Gauge |
| | 1,965,131 | Jul. 03, 1934 | R.J. Simpson | Alignment Gauge |
| | 1,977,863 | Oct. 23, 1934 | R.J. Simpson | Drum Frictioning Device |
