Granted Patent
Utility
US 4,350,513 · App. 06/324,336
Method and apparatus for extruding glass tubes
Inventors:
Alexander Coucoulas, Carroll D. Spainhour
Patented Case
View Patent ↗
Granted: Sep 21, 1982
Filed: Nov 23, 1981
Inventors
Alexander Coucoulas
Carroll D. Spainhour
Assignee (at issue)
Western Electric Company, 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.