Granted Patent
Utility
US 4,420,670 · App. 06/355,222
Control for dielectric heating in blow molding machine
Inventors:
Fred James Croswell, Charles P. Shinkle
Patented Case
View Patent ↗
Granted: Dec 13, 1983
Filed: Mar 5, 1982
Inventors
Fred James Croswell
Charles P. Shinkle
Assignee (at issue)
Cincinnati Milacron Industries, Inc.
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.