IP Library › Granted Patent US 4,419,167
Granted Patent Utility
US 4,419,167 · App. 06/376,986

Heat sealing apparatus and method

Inventors: Robert A. Hay, II, Oswald Bergman
Patented Case View Patent ↗
Granted: Dec 6, 1983 Filed: May 10, 1982
Inventors
Robert A. Hay, II
Oswald Bergman
Assignee (at issue)
THE DOW CHEMICAL COMPANY

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Quick Facts
Patent No.
US 4,419,167
App. No.
06/376,986
Filed
1982-05-10
Granted
1983-12-06
Kind
A