Granted Patent
Utility
US 4,535,508 · App. 06/595,364
Expandable casing sizing mechanism and method
Inventor:
Roger Aceto
Patented Case
View Patent ↗
Granted: Aug 20, 1985
Filed: Mar 30, 1984
Inventor
Roger Aceto
Assignee (at issue)
Union Carbide 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.