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Water driven hammer device

Tool driving or impacting – Impacting devices – Selective axial direction of impact
Patent

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Wedge arrangement for locking together hammerhead and anvil

Tool driving or impacting – Impacting devices – Impact transmitting anvil
Patent

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Well drilling apparatus

Tool driving or impacting – Impacting devices – With means for rotating tool
Patent

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Wholly air-controlled impact mechanism for high-speed...

Tool driving or impacting – Impacting devices – With anvil arranged to transmit torsional impact to tool
Reexamination Certificate

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Wobble device for a hand-held power tool and a hand-held...

Tool driving or impacting – Impacting devices – With means for rotating tool
Reexamination Certificate

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Wobble device for a hand-held power tool and a hand-held...

Tool driving or impacting – Impacting devices – With means for rotating tool
Reexamination Certificate

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Wrap spring clutch for percussive apparatus

Tool driving or impacting – Impacting devices – Hammer head moves in arcuate path or rotates
Patent

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Wrap spring clutch for percussive apparatus

Tool driving or impacting – Impacting devices – Hammer head moves in arcuate path or rotates
Patent

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Wrecking apparatus

Tool driving or impacting – Impacting devices – Impact transmitting anvil
Patent

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