Granted Patent
Utility
US 5,011,691 · App. 07/315,342
Osteogenic devices
Inventors:
Hermann Oppermann, Thangavel Kuberasampath, David C. Rueger, Engin Ozkaynak
Patented Case
View Patent ↗
Granted: Apr 30, 1991
Filed: Feb 23, 1989
Inventors
Hermann Oppermann
Thangavel Kuberasampath
David C. Rueger
Engin Ozkaynak
Assignee (at issue)
STRYKER 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.