Granted Patent
Utility
US 4,277,380 · App. 06/025,050
Water-dispersible urethane polymers and aqueous polymer dispersions
Inventors:
Roy C. Williams, David R. Rogemoser
Patented Case
View Patent ↗
Granted: Jul 7, 1981
Filed: Mar 29, 1979
Inventors
Roy C. Williams
David R. Rogemoser
Assignee (at issue)
Textron 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.