Granted Patent
Utility
US 4,743,229 · App. 06/912,985
Collagen/mineral mixing device and method
Inventor:
George H. Chu
Patented Case
View Patent ↗
Granted: May 10, 1988
Filed: Sep 29, 1986
Inventor
George H. Chu
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.