Granted Patent
Utility
US 4,894,280 · App. 07/136,235
Flexible, tear resistant composite sheet material and a method for producing the same
Inventors:
David W. Guthrie, Robert E. Weber
Patented Case
View Patent ↗
Granted: Jan 16, 1990
Filed: Dec 21, 1987
Inventors
David W. Guthrie
Robert E. Weber
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.