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Drill apparatus
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Patent number 4,773,657
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Issue date Sep 27, 1988
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Gunter H. Rohm
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Tool-clamping device
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Patent number 4,407,615
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Issue date Oct 4, 1983
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Robert Bosch GmbH
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Gerhard Kuhlmann
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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2765777
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Patent number 2,765,777
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Issue date Oct 9, 1956
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E21 - EARTH DRILLING MINING
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2120283
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Patent number 2,120,283
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Issue date Jun 14, 1938
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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2071852
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Patent number 2,071,852
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Issue date Feb 23, 1937
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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2045296
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Patent number 2,045,296
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Issue date Jun 23, 1936
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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1962790
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Patent number 1,962,790
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Issue date Jun 12, 1934
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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1921341
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Patent number 1,921,341
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Issue date Aug 8, 1933
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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1900860
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Patent number 1,900,860
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Issue date Mar 7, 1933
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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1841953
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Patent number 1,841,953
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Issue date Jan 19, 1932
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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1833361
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Patent number 1,833,361
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Issue date Nov 24, 1931
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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1807799
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Patent number 1,807,799
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Issue date Jun 2, 1931
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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1747985
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Patent number 1,747,985
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Issue date Feb 18, 1930
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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1738645
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Patent number 1,738,645
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Issue date Dec 10, 1929
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E21 - EARTH DRILLING MINING
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1729668
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Patent number 1,729,668
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Issue date Oct 1, 1929
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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1708116
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Patent number 1,708,116
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Issue date Apr 9, 1929
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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1707631
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Patent number 1,707,631
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Issue date Apr 2, 1929
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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1689408
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Patent number 1,689,408
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Issue date Oct 30, 1928
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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1666176
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Patent number 1,666,176
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Issue date Apr 17, 1928
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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1646773
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Patent number 1,646,773
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Issue date Oct 25, 1927
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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1642948
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Patent number 1,642,948
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Issue date Sep 20, 1927
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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1605713
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Patent number 1,605,713
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Issue date Nov 2, 1926
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E21 - EARTH DRILLING MINING
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1564975
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Patent number 1,564,975
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Issue date Dec 8, 1925
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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1548455
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Patent number 1,548,455
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Issue date Aug 4, 1925
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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1523844
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Patent number 1,523,844
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Issue date Jan 20, 1925
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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1248481
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Patent number 1,248,481
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Issue date Dec 4, 1917
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E21 - EARTH DRILLING MINING
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1240649
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Patent number 1,240,649
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Issue date Sep 18, 1917
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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1208141
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Patent number 1,208,141
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Issue date Dec 12, 1916
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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1132649
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Patent number 1,132,649
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Issue date Mar 23, 1915
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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1126628
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Patent number 1,126,628
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Issue date Jan 26, 1915
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS