All Patents of Type: machinist levels |
Patents 1 -
13
of 13
|
Number | Date | Patentee | Title | Type |
31,987 | Apr. 09, 1861 | R.B. Light | Machinist's Square | squares |
98,106 | Dec. 21, 1869 | J. Potts | Improvement in combined square and caliper | squares |
D10,017 | May 29, 1877 | L.L. Davis | Design for Spirit Levels | machinist levels |
283,564 | Aug. 21, 1883 | B.B. Butt | Right Angled Level | machinist levels |
304,601 | Sep. 02, 1884 | F.W. Boettcher | Combined Square, Level and Triangle | bevel squares |
351,820 | Nov. 02, 1886 | M.P. Ward | Try Square | try squares |
369,547 | Sep. 06, 1887 | G. Nicolescu | Combined Try Square, Surface Gage, and Level | machinist levels |
372,921 | Nov. 08, 1887 | C.B. Long | Spirit Level | machinist levels |
426,001 | Apr. 22, 1890 | H.W. Evans | Combined Square, Level & Surface Gage | squares |
582,517 | May 11, 1897 | S.H. Bellows | Shaft Level | machinist levels |
868,074 | Oct. 15, 1907 | E.E. Clark | Shaft Liner and Leveler | special purpose gauges |
2,206,817 | Jul. 02, 1940 | D.W. Mann | Precision Spirit Level | machinist levels |
4,603,485 | Aug. 05, 1986 | L.D. Ostby | Leveling Apparatus | machinist levels |