Granted Patent
Utility
US 5,306,307 · App. 07/733,710
Spinal disk implant
Inventors:
Howard J. Senter, William R. Wagner, Richard L. Lariviere, Jr.
Patented Case
View Patent ↗
Granted: Apr 26, 1994
Filed: Jul 22, 1991
Inventors
Howard J. Senter
William R. Wagner
Richard L. Lariviere, Jr.
Assignee (at issue)
Calcitek, 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.