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Power-driven hand tool
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Patent number 4,537,264
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Issue date Aug 27, 1985
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Robert Bosch GmbH
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Wolfgang Schmid
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Power-driven hand tool
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Patent number 4,456,076
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Issue date Jun 26, 1984
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Robert Bosch GmbH
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Wolfgang Schmid
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Power driven hammer drill
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Patent number 4,446,931
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Issue date May 8, 1984
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Robert Bosch GmbH
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Manfred Bleicher
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Rotary cam drive for impact tool
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Patent number 4,280,359
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Issue date Jul 28, 1981
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Robert Bosch GmbH
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Wolfgang Schmid
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Hammer drill
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Patent number 4,131,165
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Issue date Dec 26, 1978
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Robert Bosch GmbH
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Karl Wanner
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR