| All Patents in class 33/27.031 |
Patents 16 -
23
of 23
      |
| Number | Date | Patentee | Title | Type |
| 801,789 | Oct. 10, 1905 | O.W. Heck | Trammel Holder | trammels |
| 813,095 | Feb. 20, 1906 | J.F. Hottman | Trammel | making handsaws |
| 913,993 | Mar. 02, 1909 | A. Turnbull | Trammel-Point | trammels |
| 998,616 | Jul. 25, 1911 | H.S. Jewell, F.C. Jewell | Trammel head | trammels |
| 1,007,424 | Oct. 31, 1911 | A. Bjorklund | Trammel head | trammels |
| 1,009,214 | Nov. 21, 1911 | H. Backstrom | Combined Rule, Bevel-Square, Gage, and Compass | rules |
| 1,028,720 | Jun. 04, 1912 | J.W. Hasburg | Marking-Gage or Tram | trammels |
| 2,474,864 | Jul. 05, 1949 | G.E. Roedding | Trammel head | trammels |
