Granted Patent
Utility
US 4,723,474 · App. 06/826,272
Pneumatic stepping actuator positioner
Inventor:
Mark C. Flohr
Patented Case
View Patent ↗
Granted: Feb 9, 1988
Filed: Feb 5, 1986
Inventor
Mark C. Flohr
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.