Granted Patent
Utility
US 4,349,384 · App. 06/163,731
Method for the manufacture of segments for commutators
Inventor:
Hans-Christian Weinert
Patented Case
View Patent ↗
Granted: Sep 14, 1982
Filed: Jun 27, 1980
Inventor
Hans-Christian Weinert
Assignee (at issue)
Ringsdorff-Werke GmbH
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.