Granted Patent
Utility
US 4,403,523 · App. 06/276,653
Reversible stepping actuator
Inventor:
Fritz O. Seger
Patented Case
View Patent ↗
Granted: Sep 13, 1983
Filed: Jun 23, 1981
Inventor
Fritz O. Seger
Assignee (at issue)
SMITH INTERNATIONAL, 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.