Granted Patent
Utility
US 5,580,068 · App. 07/559,180
Liquid filled seal
Inventor:
William P. Gundy
Patented Case
View Patent ↗
Granted: Dec 3, 1996
Filed: Jul 27, 1990
Inventor
William P. Gundy
Assignee (at issue)
NPC CO., LTD.
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.