Granted Patent
Utility
US 4,776,150 · App. 06/948,153
Sealing apparatus
Inventor:
Harold B. Siegel
Patented Case
View Patent ↗
Granted: Oct 11, 1988
Filed: Dec 31, 1986
Inventor
Harold B. Siegel
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.