Granted Patent
Utility
US 4,322,003 · App. 06/134,106
Laminate with heat-sealable polyester foil and package
Inventor:
Florren E. Long
Patented Case
View Patent ↗
Granted: Mar 30, 1982
Filed: Mar 26, 1980
Inventor
Florren E. Long
Assignee (at issue)
Ludlow Company LP
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.