John MacDonald & Co. (Pneumatic Tools) Ltd.

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Patents Grantslast 30 patents

Information Patent Grant
Scabbler bit floor surfacing machine
- Patent number 4,225,187
- Issue date Sep 30, 1980
- Allan; David Thomson
- David T. Allan
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Fluid operated wall groove cutter
- Patent number 4,140,347
- Issue date Feb 20, 1979
- John MacDonald & Co. (Pneumatic Tools) Ltd.
- David T. Allan
- B28 - WORKING CEMENT, CLAY, OR STONE

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