Granted Patent
Utility
US 4,548,341 · App. 06/548,116
Plastic injector with heat control
Inventor:
Robert Hambleton
Patented Case
View Patent ↗
Granted: Oct 22, 1985
Filed: Nov 2, 1983
Inventor
Robert Hambleton
Assignee (at issue)
AT&T Technologies Incorporated
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.