David L. Tsang

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Cobourg, CA

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Patents Grantslast 30 patents

Information Patent Grant
Closure mechanism for tire curing press
- Patent number 4,270,887
- Issue date Jun 2, 1981
- United Tire & Rubber Co. Limited
- David L. Tsang
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Tire curing assembly with improved seal
- Patent number 4,268,234
- Issue date May 19, 1981
- United Tire & Rubber Co. Limited
- David L. Tsang
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL