Brian L. Hetherington

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Kingston, CA

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Patents Grantslast 30 patents

Information Patent Grant
Manufacture of plastic containers
- Patent number 4,357,294
- Issue date Nov 2, 1982
- Du Pont Canada Inc.
- Brian L. Hetherington
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Process for producing a heat-weakened strip in polyolefin film
- Patent number 4,265,616
- Issue date May 5, 1981
- Du Pont Canada, Inc.
- Brian L. Hetherington
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL