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| Patents for B25D 16 - Portable percussive machines with superimposed rotation (2,122) |
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| 06/25/1980 | EP0012438A1 Percussive tools | | 06/24/1980 | CA1080005A1 Forward biased switch for a reversible hammer drill | | 06/17/1980 | CA1079713A1 Drilling bit | | 05/27/1980 | US4204580 Forward biased switch for a reversible hammer drill | | 04/29/1980 | US4200159 Cutter head, drill bit and similar drilling tools | | 03/11/1980 | US4192391 Piston for a hammer drill having a separable part | | 11/29/1979 | WO1979001041A1 Hand mechanical tool | | 07/03/1979 | CA1057603A1 Electropneumatic hammer | | 06/19/1979 | US4158313 Electric hand tool | | 03/13/1979 | CA1101836B Tool shank and chuck combination for hammer drill | | 03/13/1979 | CA1050528A1 Tool shank and chuck combination for hammer drill | | 09/19/1978 | US4114699 Pneumatic rotary hammer device | | 09/12/1978 | US4113035 Hammer drill with drive and percussion elements accommodated in a cylinder | | 08/22/1978 | US4107949 Tool shank and chuck combination for hammer drill | | 07/04/1978 | US4098351 Hammer tool | | 02/14/1978 | US4073348 Impact drilling tool | | 01/03/1978 | US4066136 Torque and impulse transmitting machine | | 12/27/1977 | US4064949 Electropneumatic hammer | | 12/21/1976 | US3998278 Hammer drill | | 05/11/1976 | US3955628 Hammer drill | | 01/27/1976 | US3934688 Shifter mechanism | | 01/13/1976 | US3931744 Hammer-drill |
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