Granted Patent
Utility
US 4,290,993 · App. 06/110,891
Method and apparatus for making nodule filament fibers
Inventor:
Robert E. Maringer
Patented Case
View Patent ↗
Granted: Sep 22, 1981
Filed: Jan 10, 1980
Inventor
Robert E. Maringer
Assignee (at issue)
Battelle Development Corporation
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.