| All Patents in class 33/536 |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 1,231,185 | Jun. 26, 1917 | F. Muller | Sine Bar | sine bars |
| 1,382,717 | Jun. 28, 1921 | J. Duplessie | Measuring Device | special purpose gauges |
| 2,105,054 | Jan. 11, 1938 | M. Posthuma | Gauge for measuring angles | measurement gauges |
| 2,111,299 | Mar. 15, 1938 | O.E. Robbins | Magnetic Sine Table | angle bars and angle plates |
| 2,347,111 | Apr. 18, 1944 | J. Jesionowski | Sine vise | angle bars and angle plates |
| 2,417,150 | Mar. 11, 1947 | E.A. Berry | Sine Bar | angle bars and angle plates |
| 3,230,630 | Jan. 25, 1966 | G.L. Gershman | Internal taper micrometer | micrometers |
| 3,423,885 | Jan. 28, 1969 | H.D. Crandall | Sine V Block | sine bars |
| 3,788,633 | Jan. 29, 1974 | A. Cho | Adjustable Angle Plate Arrangement | angle bars and angle plates |
