Granted Patent
Utility
US 5,356,426 · App. 08/045,360
Refillable ice pack
Inventors:
Robert E. Delk, Michael L. Bowen
Patented Case
View Patent ↗
Granted: Oct 18, 1994
Filed: Apr 13, 1993
Inventors
Robert E. Delk
Michael L. Bowen
Assignee (at issue)
Struckmeyer 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.