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Position incrementer
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Patent number 4,686,870
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Issue date Aug 18, 1987
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James F. Mack
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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3780814
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Patent number 3,780,814
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Issue date Dec 25, 1973
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2203953
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Patent number 2,203,953
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Issue date Jun 11, 1940
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E21 - EARTH DRILLING MINING
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1033990
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Patent number 1,033,990
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Issue date Jul 30, 1912
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E21 - EARTH DRILLING MINING
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655292
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Patent number 655,292
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Issue date Aug 7, 1900
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E21 - EARTH DRILLING MINING
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601223
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Patent number 601,223
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Issue date Mar 22, 1898
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E21 - EARTH DRILLING MINING
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595969
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Patent number 595,969
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Issue date Dec 21, 1897
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E21 - EARTH DRILLING MINING
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550074
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Patent number 550,074
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Issue date Nov 19, 1895
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E21 - EARTH DRILLING MINING
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464612
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Patent number 464,612
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Issue date Dec 8, 1891
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E21 - EARTH DRILLING MINING
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430292
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Patent number 430,292
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Issue date Jun 17, 1890
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E21 - EARTH DRILLING MINING
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417004
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Patent number 417,004
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Issue date Dec 10, 1889
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E21 - EARTH DRILLING MINING
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396462
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Patent number 396,462
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Issue date Jan 22, 1889
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E21 - EARTH DRILLING MINING
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387127
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Patent number 387,127
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Issue date Jul 31, 1888
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E21 - EARTH DRILLING MINING
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344907
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Patent number 344,907
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Issue date Jul 6, 1886
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E21 - EARTH DRILLING MINING
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330981
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Patent number 330,981
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Issue date Nov 24, 1885
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E21 - EARTH DRILLING MINING
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320371
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Patent number 320,371
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Issue date Jun 16, 1885
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E21 - EARTH DRILLING MINING
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290309
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Patent number 290,309
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Issue date Dec 18, 1883
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E21 - EARTH DRILLING MINING
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269619
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Patent number 269,619
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Issue date Dec 26, 1882
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E21 - EARTH DRILLING MINING
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258623
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Patent number 258,623
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Issue date May 30, 1882
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E21 - EARTH DRILLING MINING
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239479
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Patent number 239,479
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Issue date Mar 29, 1881
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E21 - EARTH DRILLING MINING
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228797
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Patent number 228,797
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Issue date Jun 15, 1880
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E21 - EARTH DRILLING MINING
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157969
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Patent number 157,969
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Issue date Dec 22, 1874
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E21 - EARTH DRILLING MINING
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130703
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Patent number 130,703
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Issue date Aug 20, 1872
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E21 - EARTH DRILLING MINING
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80232
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Patent number 80,232
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Issue date Jul 21, 1868
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E21 - EARTH DRILLING MINING
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65802
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Patent number 65,802
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Issue date Jun 18, 1867
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E21 - EARTH DRILLING MINING
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63682
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Patent number 63,682
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Issue date Apr 9, 1867
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E21 - EARTH DRILLING MINING
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24421
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Patent number 24,421
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E21 - EARTH DRILLING MINING
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9379
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Patent number 9,379
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Issue date Nov 2, 1852
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E21 - EARTH DRILLING MINING