Granted Patent
Utility
US 4,640,726 · App. 06/749,170
Heat activation process and apparatus for heat shrinkable material
Inventors:
Lorry F. Sallee, Robert Lee Popp
Patented Case
View Patent ↗
Granted: Feb 3, 1987
Filed: Jun 27, 1985
Inventors
Lorry F. Sallee
Robert Lee Popp
Assignee (at issue)
Kimberly-Clark 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.