B - Operations – Transporting – 25 – D
Patent
B - Operations, Transporting
25
D
37/8
B25D 9/00 (2006.01) F02B 1/04 (2006.01)
Patent
CA 1310825
Abstract of the Disclosure A portable concrete hammer including a wheeled car- riage, a mast movable between a vertical operating position and a horizontal transport position, and an automatic ratchet drive that advances the concrete hammer over a concrete surface during the portion of the operating cycle when the weight is being raised.
593442
Ellington David A.
Gowling Lafleur Henderson Llp
LandOfFree
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