| All Patents in class 33/427 |
Patents 1 -
15
of 37
      |
| Number | Date | Patentee | Title | Type |
| 98,710 | Jan. 11, 1870 | E.H. Robinson | Improvement in ruling-device | carpenter squares |
| 99,917 | Feb. 15, 1870 | L.L. Lamb | Sliding Square & Caliper | measurement gauges |
| 171,927 | Jan. 11, 1876 | J.D. Leach, C. Farnham | Improvement in Beam Squares | squares |
| 194,587 | Aug. 28, 1877 | J. Daniels | Improvement in attachments for carpenters' squares | squares |
| 208,104 | Sep. 17, 1878 | J.M. Kurtz | Glazier's Square and Rule | squares |
| 282,583 | Aug. 07, 1883 | L.S. Starrett | Beveling Instrument | combination squares |
| 304,601 | Sep. 02, 1884 | F.W. Boettcher | Combined Square, Level and Triangle | bevel squares |
| 389,370 | Sep. 11, 1888 | H.W. Evans | Bevel and Square | bevel squares |
| 426,001 | Apr. 22, 1890 | H.W. Evans | Combined Square, Level & Surface Gage | squares |
| 504,278 | Aug. 29, 1893 | C.W. Preston | Combination Gage | surface gauges |
| 548,329 | Oct. 22, 1895 | F. Steemmerich | Key Seat Rule | rule attachments |
| 636,098 | Oct. 31, 1899 | W.D. Arnot | Combination Tool | rules |
| 659,513 | Oct. 09, 1900 | A.P. Dubus | Square | miter squares |
| 683,247 | Sep. 24, 1901 | G.Y. Carter | Compound Rule Attachment | rule attachments |
| 685,634 | Oct. 29, 1901 | F. Olson, J.C. Opland | Combined Slide Gage and Try Square | squares |
