Granted Patent
Utility
US 4,329,490 · App. 06/141,983
Water-dispersible urethane polymers, aqueous polymer dispersions and half-esters useful therein
Inventors:
Roy C. Williams, David R. Rogemoser
Patented Case
View Patent ↗
Granted: May 11, 1982
Filed: Apr 21, 1980
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.