Granted Patent
Utility
US 4,892,552 · App. 06/904,592
Orthopedic device
Inventors:
Robert D. Ainsworth, Thirumalai N. C. Devanathan, Steven Lin
Patented Case
View Patent ↗
Granted: Jan 9, 1990
Filed: Sep 8, 1986
Inventors
Robert D. Ainsworth
Thirumalai N. C. Devanathan
Steven Lin
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.