Granted Patent
Utility
US 4,708,258 · App. 07/021,714
Salvage drum
Inventors:
Mark D. Shaw, J. Tad Heyman, Laurence M. Bierce
Patented Case
View Patent ↗
Granted: Nov 24, 1987
Filed: Mar 4, 1987
Inventors
Mark D. Shaw
J. Tad Heyman
Laurence M. Bierce
Assignee (at issue)
Bondico, Inc.
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.