Granted Patent
Utility
US 5,058,563 · App. 07/538,838
Reusable warmers of the type employing a super-cooled solution and an activator
Inventor:
Charles F. Manker
Patented Case
View Patent ↗
Granted: Oct 22, 1991
Filed: Jun 15, 1990
Inventor
Charles F. Manker
Assignee (at issue)
PRISM TECHNOLOGIES LLC
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.