Granted Patent
Utility
US 4,812,666 · App. 07/097,679
Position feedback enhancement over a limited repositioning area for a moveable member
Inventor:
Per Wistrand
Patented Case
View Patent ↗
Granted: Mar 14, 1989
Filed: Sep 17, 1987
Inventor
Per Wistrand
Assignee (at issue)
UNIVERSAL INSTRUMENTS CORPORATION
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.