B - Operations – Transporting – 25 – D
Patent
B - Operations, Transporting
25
D
138/40.13
B25D 9/12 (2006.01)
Patent
CA 1134716
HAMMER ABSTRACT A hammer or impactor apparatus including improved motive fluid means cooperable with spring bias means to reciprocably drive a hammer element and an improved process of hammer cycling achieved thereby.
348967
Duff John
Mcfarlane Peter
Joy Manufacturing Company
Macrae & Co.
LandOfFree
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