Granted Patent
Utility
US 5,207,710 · App. 07/819,059
Method for improving implant fixation
Inventors:
George H. Chu, Rosa Armstrong, Robert W. H. Chang
Patented Case
View Patent ↗
Granted: May 4, 1993
Filed: Jan 10, 1992
Inventors
George H. Chu
Rosa Armstrong
Robert W. H. Chang
Assignee (at issue)
COLLAGEN 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.