Granted Patent
Utility
US 4,523,423 · App. 06/565,761
Cradle for a twisting machine
Inventors:
Jean Bouffard, Andre Dumoulin, Edgar K. Lederhose
Patented Case
View Patent ↗
Granted: Jun 18, 1985
Filed: Dec 27, 1983
Inventors
Jean Bouffard
Andre Dumoulin
Edgar K. Lederhose
Assignee (at issue)
Nortel Networks Limited
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.