All Patents of Type: dividers |
Patents 1 -
15
of 126
|
Number | Date | Patentee | Title | Type |
5,929 | Nov. 21, 1848 | C. Rieffel, N. Thorn | Dividers | dividers |
7,257 | Apr. 09, 1850 | D.H. Chamberlain | Divider or Compass | dividers |
13,993 | Dec. 25, 1855 | H.M. Parkhurst | Proportional Dividers | dividers |
21,435 | Sep. 07, 1858 | J.D. Moon | Calipers and Dividers | calipers |
30,009 | Sep. 11, 1860 | J.W. Strange | Spring Dividers | calipers |
43,854 | Aug. 16, 1864 | C. Jillson | Combination Calipers and Dividers | calipers |
50,173 | Sep. 26, 1865 | S.A. Shurtleff | Improvement in Dividers | dividers |
52,616 | Feb. 13, 1866 | U. Smith | Combination Parallel Rule and Square | rules |
67,360 | Jul. 30, 1867 | L. Shelters | Caliper & Divider | calipers |
70,840 | Nov. 12, 1867 | W.G. Hillegass | Improvement in Pencil-Holders for Compasses | dividers |
72,433 | Dec. 17, 1867 | O.E. Weatherhead | Divider | dividers |
119,875 | Oct. 10, 1871 | C.M. Nichols | Divider | dividers |
121,850 | Dec. 12, 1871 | A.A. Cook | Divider | dividers |
128,417 | Jun. 25, 1872 | R. Nichol | Improvement in Combined Rules and Dividers | dividers |
130,038 | Jul. 30, 1872 | T. Hagerty | Improvement in the Construction of Compasses | dividers |