Granted Patent
Utility
US 4,925,471 · App. 07/308,464
Method of restarting operations for manufacturing filaments of a thermoplastic material after an accident of the breaking
Inventor:
Kiichi Yamatsuta
Patented Case
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Granted: May 15, 1990
Filed: Feb 10, 1989
Inventor
Kiichi Yamatsuta
Assignee (at issue)
ASAHI FIBER GLASS CO., LTD.
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.