Michael R. Clarke

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Ottawa, CA

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Patents Grantslast 30 patents

Information Patent Grant
Aqueous ammoniacal zinc arsenic or zinc/copper arsenic wood preserv...
- Patent number 4,038,086
- Issue date Jul 26, 1977
- Canadian Patents and Development Limited
- Michael R. Clarke
- B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
Information Patent Grant
Aqueous ammoniacal zinc oxide compositions for lumber treatment
- Patent number 4,011,090
- Issue date Mar 8, 1977
- Canadian Patents and Development Limited
- Michael R. Clarke
- B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
Information Patent Grant
Aqueous compositions for lumber treatment
- Patent number 3,945,834
- Issue date Mar 23, 1976
- Canadian Patents and Development Limited
- Michael R. Clarke
- B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
Information Patent Grant
Heavy duty aqueous wood preservative
- Patent number 3,945,835
- Issue date Mar 23, 1976
- Canadian Patents and Development Limited
- Michael R. Clarke
- B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...