Granted Patent
Utility
US 4,350,776 · App. 06/238,467
Method of making a low-friability, thermosetting foam
Inventor:
Stuart B. Smith
Patented Case
View Patent ↗
Granted: Sep 21, 1982
Filed: Feb 26, 1981
Inventor
Stuart B. Smith
Assignee (at issue)
Thermoset 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.