Granted Patent
Utility
US 4,607,481 · App. 06/676,442
Process for spiral wrapping reinforcement filaments
Inventors:
Gilbert C. Bell, Harry W. Stanhope
Patented Case
View Patent ↗
Granted: Aug 26, 1986
Filed: Nov 29, 1984
Inventors
Gilbert C. Bell
Harry W. Stanhope
Assignee (at issue)
Celanese GmbH
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.