Granted Patent
Utility
US 4,543,249 · App. 06/424,699
Hair spray compositions containing methylmethacrylate-methacrylic acid copolymers
Inventor:
Elliot Nelson
Patented Case
View Patent ↗
Granted: Sep 24, 1985
Filed: Sep 27, 1982
Inventor
Elliot Nelson
Assignee (at issue)
American Cyanamid Company
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.