Granted Patent
Utility
US 4,293,510 · App. 06/133,261
Method of lining closures
Inventors:
Robert W. George, II, Casper W. Miller, Kenneth Rapey
Patented Case
View Patent ↗
Granted: Oct 6, 1981
Filed: May 18, 1980
Inventors
Robert W. George, II
Casper W. Miller
Kenneth Rapey
Assignee (at issue)
National Crane Corporation
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.