Granted Patent
Utility
US 4,377,657 · App. 06/248,978
Bis-maleimide resin/divinyl arylene composites
Inventors:
Sidney W. Street, Don A. Beckley
Patented Case
View Patent ↗
Granted: Mar 22, 1983
Filed: Mar 30, 1981
Inventors
Sidney W. Street
Don A. Beckley
Assignee (at issue)
HITCO, 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.