Granted Patent
Utility
US 4,454,050 · App. 06/476,950
Aqueous release agent and lubricant
Inventor:
Jerome W. Bertell
Patented Case
View Patent ↗
Granted: Jun 12, 1984
Filed: Mar 21, 1983
Inventor
Jerome W. Bertell
Assignee (at issue)
Pennwalt 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.