William Boyd Dempster

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Mississauga, CA

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Patents Grantslast 30 patents

Information Patent Grant
Printing and like rollers
- Patent number 4,028,786
- Issue date Jun 14, 1977
- Canathane Roller Corporation Limited
- William Boyd Dempster
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL