Granted Patent
Utility
US 4,904,093 · App. 07/236,056
Gussetted plastic bags having relief seals and method of making same
Inventors:
Timothy R. Woods, Fred Stevenson, R. Douglas Behr
Patented Case
View Patent ↗
Granted: Feb 27, 1990
Filed: Aug 24, 1988
Inventors
Timothy R. Woods
Fred Stevenson
R. Douglas Behr
Assignee (at issue)
THE DOW CHEMICAL COMPANY
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.