Granted Patent
Utility
US 4,834,729 · App. 06/948,315
Arthroscopic surgical instrument
Inventor:
Douglas D. Sjostrom
Patented Case
View Patent ↗
Granted: May 30, 1989
Filed: Dec 30, 1986
Inventor
Douglas D. Sjostrom
Assignee (at issue)
Dyonics, 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.