All Patents of Type: protractors |
Patents 1 -
15
of 55
|
Number | Date | Patentee | Title | Type |
1,197X | Jan. 19, 1810 | E. Williams | Universal protractor | protractors |
2,279X | Mar. 14, 1815 | B. Otis | Perspective protractor | protractors |
3,794X | Dec. 24, 1823 | N. Goodwin | Rectangular protractor | protractors |
6,034X | Jun. 16, 1830 | I. Pool | Protractor | protractors |
7,695X | Aug. 01, 1833 | E. Brown | Facilitating protractor | protractors |
15,183 | Jun. 24, 1856 | C.R. Iliff | Drafting Protractors | protractors |
161,392 | Mar. 30, 1875 | A.H. Dodd | Protractor | protractors |
165,519 | Jul. 13, 1875 | A. Swasey | Protractor | protractors |
199,425 | Jan. 22, 1878 | E. Ericson | Centering Square & Protractor | protractors |
267,336 | Nov. 14, 1882 | A.H. Ege, C.D. Waters | Protractor | protractors |
285,907 | Oct. 02, 1883 | P. Kennelly | Protractor | protractors |
323,009 | Jul. 28, 1885 | T.B. Williams | Bevel Protractor | protractors |
330,799 | Nov. 17, 1885 | G.B. Orendorff | Protractor | protractors |
339,682 | Apr. 13, 1886 | A. Nilsen | Square and protractor for builders' use | carpenter squares |
346,836 | Aug. 03, 1886 | G. Almorth | Protractor | protractors |