Granted Patent
Utility
US 4,276,330 · App. 05/845,526
Trilaminate film for forming sideweld bags
Inventors:
Hugh E. Stanley, George M. Tokos
Patented Case
View Patent ↗
Granted: Jun 30, 1981
Filed: Oct 26, 1977
Inventors
Hugh E. Stanley
George M. Tokos
Assignee (at issue)
Crown Zellerbach Corporation
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.