Granted Patent
Utility
US 4,493,319 · App. 06/521,020
Ring applicator having floating inner tube
Inventors:
Todd Polk, Jerry Polizzi
Patented Case
View Patent ↗
Granted: Jan 15, 1985
Filed: Aug 8, 1983
Inventors
Todd Polk
Jerry Polizzi
Assignee (at issue)
Cabot Medical 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.