Granted Patent
Utility
US 4,888,040 · App. 07/329,749
Neck ring/plunger assembly for a glassware forming machine
Inventors:
Robert J. Douglas, Albert J. Trahan
Patented Case
View Patent ↗
Granted: Dec 19, 1989
Filed: Mar 28, 1989
Inventors
Robert J. Douglas
Albert J. Trahan
Assignee (at issue)
Emhart 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.