Granted Patent
Utility
US 5,147,919 · App. 07/365,340
Reinforcing material comprising E-polycaprolactone and pulverized fuel ash
Inventor:
Brian Arnold
Patented Case
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Granted: Sep 15, 1992
Filed: Jun 13, 1989
Inventor
Brian Arnold
Assignee (at issue)
British United Shoe Machinery Limited
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.