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Rotary hammer driving mechanism
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Patent number 4,750,567
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Issue date Jun 14, 1988
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Black & Decker Inc.
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Horst Grossmann
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Rotary hammer driving mechanism
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Patent number 4,657,088
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Issue date Apr 14, 1987
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Black & Decker Inc.
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Horst Grossmann
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Latching arrangement for power tools
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Patent number 4,506,743
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Issue date Mar 26, 1985
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Black & Decker Inc.
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Horst Grossmann
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Compact multi-speed hammer-drill
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Patent number 4,418,766
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Issue date Dec 6, 1983
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Black & Decker Inc.
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Horst Grossmann
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR