IP Library › Granted Patent US 4,828,564
Granted Patent Utility
US 4,828,564 · App. 07/085,225

Endoprosthetic bone joint devices

Inventors: John T. Scales, William Bonfield, Keith Wright
Patented Case View Patent ↗
Granted: May 9, 1989 Filed: Aug 13, 1987
Inventors
John T. Scales
William Bonfield
Keith Wright
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT 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.

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 4,828,564
App. No.
07/085,225
Filed
1987-08-13
Granted
1989-05-09
Kind
A