Granted Patent
Utility
US 5,486,236 · App. 08/239,057
Accelerated extraction of rolled materials
Inventors:
Carl W. Townsend, Edna M. Purer
Patented Case
View Patent ↗
Granted: Jan 23, 1996
Filed: May 6, 1994
Inventors
Carl W. Townsend
Edna M. Purer
Assignee (at issue)
Hughes Aircraft 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.