Granted Patent
Utility
US 4,818,173 · App. 06/484,228
Robot arm member relative movement sensing apparatus
Inventor:
Mohammed M. Khusro
Patented Case
View Patent ↗
Granted: Apr 4, 1989
Filed: Apr 12, 1983
Inventor
Mohammed M. Khusro
Assignee (at issue)
Polaroid 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.