IP Library › Granted Patent US 4,834,759
Granted Patent Utility
US 4,834,759 · App. 07/036,587

Endoprosthesis for a hip joint

Inventors: Lorenzo Spotorno, Otto Frey
Patented Case View Patent ↗
Granted: May 30, 1989 Filed: Apr 10, 1987
Inventors
Lorenzo Spotorno
Otto Frey
Assignees (at issue)
Sulzer Brothers Limited
PROTEK, 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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 4,834,759
App. No.
07/036,587
Filed
1987-04-10
Granted
1989-05-30
Kind
A