Granted Patent
Utility
US 4,479,243 · App. 06/467,445
Collapsible receptacle with prefabricated lift loops and method of making
Inventors:
Norwin C. Derby, Robert R. Williamson
Patented Case
View Patent ↗
Granted: Oct 23, 1984
Filed: Feb 17, 1983
Inventors
Norwin C. Derby
Robert R. Williamson
Assignee (at issue)
Super Sack Mfg. Corp.
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.