Granted Patent
Utility
US 4,770,938 · App. 06/912,738
Hollow trilobal cross-section filament
Inventors:
Weldon H. Peterson, Kenneth G. Morrison
Patented Case
View Patent ↗
Granted: Sep 13, 1988
Filed: Sep 29, 1986
Inventors
Weldon H. Peterson
Kenneth G. Morrison
Assignee (at issue)
ALLIED CONSULTING, 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.