Granted Patent
Utility
US 4,299,741 · App. 06/127,702
Aqueous release coating compositions
Inventor:
Donald F. Doehnert
Patented Case
View Patent ↗
Granted: Nov 10, 1981
Filed: Mar 6, 1980
Inventor
Donald F. Doehnert
Assignee (at issue)
Permacel
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.