All Patents of Type: protractors |
Patents 1 -
15
of 136
|
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 |
3,413X | Dec. 04, 1821 | G.H. Thompson | Protractors | 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 |
7,817X | Nov. 19, 1833 | B.J. Lewis | Tailor's Square and Measure | squares |
15,183 | Jun. 24, 1856 | C.R. Iliff | Drafting Protractors | protractors |
20,356 | May 25, 1858 | J. Lyman | Protractor | protractors |
31,987 | Apr. 09, 1861 | R.B. Light | Machinist's Square | squares |
45,535 | Dec. 20, 1864 | H. Taylor | Parallel Rule with Protractor | rules |
48,454 | Jun. 27, 1865 | S.L. Simpson | Improvement in Rulers | rules |
52,616 | Feb. 13, 1866 | U. Smith | Combination Parallel Rule and Square | rules |
53,397 | Mar. 27, 1866 | W.W. Branch, Jr. | Combination Bevel and Protractor | bevels |
65,631 | Jun. 11, 1867 | D.A. Bailey | Improvement in Combination Squares | squares |