E - Fixed Constructions – 21 – C
Patent
E - Fixed Constructions
21
C
90/48, 37/8
E21C 37/24 (2006.01) B25D 17/28 (2006.01) B28D 1/18 (2006.01) B28D 1/26 (2006.01)
Patent
CA 1099917
A B S T R A C T A fluid operated groove cutter, especially but not exclusively, for cutting grooves in concrete structures and comprising a carriage having wheels thereon adapted to run on a concrete structure, a fluid operated percussion hammer mounted on the carriage and including means for adjusting the depth of stroke of the hammer relative to said wheels.
269990
Allan David T.
Fetherstonhaugh & Co.
Macdonald (john) & Company (pneumatic Tools) Limited
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