| All Patents in class 33/199R |
Patents 31 -
45
of 100
      |
| Number | Date | Patentee | Title | Type |
| 1,392,313 | Oct. 04, 1921 | G.S. Fallow | Screw Thread Gage | special purpose gauges |
| 1,433,528 | Oct. 31, 1922 | C.G. Johnson, E.J. Bryant | Ring Thread Gauge | thread gages |
| 1,456,938 | May 29, 1923 | A.W. Schoof | Instument for Testing and Comparing the Lead of a Screw Thread | measurement gauges |
| 1,489,576 | Apr. 08, 1924 | B.M. Hanson | Gauge | special purpose gauges |
| 1,499,730 | Jul. 01, 1924 | B.M. Hanson | Gauge Instrument | measurement gauges |
| 1,547,514 | Jul. 28, 1925 | P.M. Mueller | Thread Testing Device | thread gages |
| 1,549,635 | Aug. 11, 1925 | P.F. Vokal | Thread Gauge | micrometers |
| 1,593,753 | Jul. 27, 1926 | P.J. Darlington | Micrometer Caliper | micrometers |
| 1,613,824 | Jan. 11, 1927 | B.M. Hanson, estate of (deceased) | Gauge | thread gages |
| 1,625,462 | Apr. 19, 1927 | H. Frauenthal | Dimension Gage | measurement gauges |
| 1,630,690 | May 31, 1927 | A. Telfer, J.P. Bosle | Gauge | special purpose gauges |
| 1,660,335 | Feb. 28, 1928 | C.G. Johnson | Snap Thread Gage | special purpose gauges |
| 1,714,780 | May 28, 1929 | J. Hartness | Gauge for Screw Threads | thread gages |
| 1,715,813 | Jun. 04, 1929 | R.O. Beardsley | Mounting for Screws and Taps | jigs and fixtures |
| 1,797,121 | Mar. 17, 1931 | F.J. Bohn | Micrometer Gage for Internal Threads | micrometers |
