Granted Patent
Utility
US 4,377,889 · App. 06/265,737
Apparatus for controlling edge uniformity in nonwoven fabrics
Inventors:
Jack R. Tatham, Jerry L. Shelor
Patented Case
View Patent ↗
Granted: Mar 29, 1983
Filed: May 21, 1981
Inventors
Jack R. Tatham
Jerry L. Shelor
Assignee (at issue)
Phillips Petroleum 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.