| All Patents in class 33/199R |
Patents 46 -
60
of 100
      |
| Number | Date | Patentee | Title | Type |
| 1,817,637 | Aug. 04, 1931 | P.V. Miller | Snap Thread Gauge | thread gages |
| 1,829,797 | Nov. 03, 1931 | J. Hartness | Thread Gauging | thread gages |
| 1,851,283 | Mar. 29, 1932 | C.G. Johnson | Gauge | special purpose gauges |
| 1,854,242 | Apr. 19, 1932 | E.A. Walker, H.M. Allison | Machine for Measuring Taps | measurement gauges |
| 1,854,244 | Apr. 19, 1932 | E.A. Walker, H.M. Allison | Machine for Measuring Two-Fluted Taps | measuring tools |
| 1,862,146 | Jun. 07, 1932 | W.E. Hoke | Screw Thread Gauge | thread gages |
| 1,874,517 | Aug. 30, 1932 | J. Hartness | Screw Thread Gauging | thread gages |
| 1,877,307 | Sep. 13, 1932 | J. Hartness | Tolerance zone on gauges | thread gages |
| 1,879,398 | Sep. 27, 1932 | G.E. Mirfield | Gauge for Sizing Internal Threads | measurement gauges |
| 1,905,705 | Apr. 25, 1933 | J. Hartness | Screw Thread Gauge | thread gages |
| 1,921,899 | Aug. 08, 1933 | C.H. Webbeking | Micrometer Caliper Attachment | micrometers |
| 1,922,849 | Aug. 15, 1933 | J. Hartness | Gauging of Screw Threads | thread gages |
| 1,939,643 | Dec. 19, 1933 | R.O. Beardsley | Screw Thread Gauge | thread gages |
| 1,950,912 | Mar. 13, 1934 | E.A. Aronson | Gauge | measurement gauges |
| 1,961,647 | Jun. 05, 1934 | S. Sonoda | Thread Gauge | thread gages |
