Granted Patent
Utility
US 4,085,186 · App. 05/637,851
Process for producing flow-in closure sealing gaskets from hot melt compositions
Inventor:
William C. Rainer
Patented Case
View Patent ↗
Granted: Apr 18, 1978
Filed: Dec 5, 1975
Inventor
William C. Rainer
Assignee (at issue)
CPL Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.