Granted Patent
Utility
US 4,225,303 · App. 06/013,268
Blow molding devices
Inventor:
Harry E. Crisci
Patented Case
View Patent ↗
Granted: Sep 30, 1980
Filed: Feb 21, 1979
Inventor
Harry E. Crisci
Assignee (at issue)
Northern Engineering & Plastics, Corp.
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.