| All Patents in class 33/420 |
Patents 1 -
15
of 17
      |
| Number | Date | Patentee | Title | Type |
| 11,841 | Oct. 24, 1854 | J. Shanklin | Square, Scale, Level, and Bevel | squares |
| 14,329 | Feb. 26, 1856 | H. Whipple | Instrument for measuring the length of braces in carpentry | rules |
| 35,159 | May 06, 1862 | J. Iseman | Framing Square | squares |
| 158,843 | Jan. 19, 1875 | J. Baumgartner, A. Iske | Carpenters' Sliding Gages and Squares | carpenter squares |
| 185,706 | Dec. 26, 1876 | W.P. Tullock | Improvement in centering devices | layout tools |
| 243,592 | Jun. 28, 1881 | F.N. Marvick | Jointed Pitch Board for Squares | |
| 433,383 | Jul. 29, 1890 | W.H. Wood | Pitch Board | |
| 642,888 | Feb. 06, 1900 | A. Van Vliet | Combination Tool | carpenter squares |
| 650,436 | May 29, 1900 | N. Squier, F.B. Townsend | Combination Tool | bevel squares |
| 795,160 | Jul. 18, 1905 | M. Nicholls | Rafter Attachment for Steel Squares | bevels |
| 815,509 | Mar. 20, 1906 | E.W. Campagna | Measuring Instrument | lumber rules |
| 820,311 | May 08, 1906 | E. Oehrle | Square and Level | squares |
| 858,431 | Jul. 02, 1907 | W.H. Wiegmann | Stair-Gage | special purpose gauges |
| 1,014,453 | Jan. 09, 1912 | J.F. Dorsey, J.F. Clark | Attachment for Squares | square attachments |
| 1,295,788 | Feb. 25, 1919 | R.R. Nance | Framing Square with Guide | carpenter squares |
