Granted Patent
Utility
US 5,221,510 · App. 07/823,178
Method for forming curing envelope
Inventors:
Calvin M. Kassaw, Jr., Jolanta K. Klimek
Patented Case
View Patent ↗
Granted: Jun 22, 1993
Filed: Jan 21, 1992
Inventors
Calvin M. Kassaw, Jr.
Jolanta K. Klimek
Assignee (at issue)
Bridgestone Firestone
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.