Granted Patent
Utility
US 5,334,458 · App. 07/872,798
Rubber/plastic co-extrusion
Inventors:
Thomas O. Powers, Timothy T. Hertrick, Mary A. Peak
Patented Case
View Patent ↗
Granted: Aug 2, 1994
Filed: Apr 23, 1992
Inventors
Thomas O. Powers
Timothy T. Hertrick
Mary A. Peak
Assignee (at issue)
The Geauga 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.