Granted Patent
Utility
US 4,889,915 · App. 07/038,081
Urethane adhesives
Inventors:
Melvin Brauer, Clayton C. Crawford
Patented Case
View Patent ↗
Granted: Dec 26, 1989
Filed: Apr 14, 1987
Inventors
Melvin Brauer
Clayton C. Crawford
Assignee (at issue)
CasChem, 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.