| All Patents in class 33/809 |
Patents 16 -
30
of 44
      |
| Number | Date | Patentee | Title | Type |
| 596,896 | Jan. 04, 1898 | G.H. Massa | Extension Rule or Measuring Stick | folding rules |
| 648,576 | May 01, 1900 | W.B. Taylor | Extensible Measuring Rule | measuring rods |
| 651,142 | Jun. 05, 1900 | W.L. Keuffel | Slide Rule | slide rules |
| 740,653 | Oct. 06, 1903 | E. Hipolito | Rule for Measuring Openings | rules |
| 763,523 | Jun. 28, 1904 | F.L. Traut, J.A. Traut | Measuring Rule | folding rule joints |
| 792,719 | Jun. 20, 1905 | H.E. Molkenthin | Tool Handle | hammer handles |
| 794,170 | Jul. 11, 1905 | J.W. Fessler | Center Gauge | center marking gauges |
| 815,509 | Mar. 20, 1906 | E.W. Campagna | Measuring Instrument | lumber rules |
| 838,696 | Dec. 18, 1906 | W.F. Doherty | Engineer's Slide Rule | slide rules |
| 844,536 | Feb. 19, 1907 | H.U. Prindle | Extensible Rule and Calipers | extensible rules |
| 887,994 | May 19, 1908 | W.B. Bartram | Coin Controlled Machine for Measuring the Heights of Persons | measuring apparatus |
| 904,830 | Nov. 24, 1908 | H. Boeck | Measuring Rod | measuring apparatus |
| 909,068 | Jan. 05, 1909 | W.H. Murphy, C.K. Denman | Extension Rule | extensible rules |
| 1,028,507 | Jun. 04, 1912 | L. Voggenreiter | Rule | folding rules |
| 1,031,517 | Jul. 02, 1912 | L.A. Boyce | Measuring Stick for Lumber | marking gauges |
