IP Library › Granted Patent US 4,354,492
Granted Patent Utility
US 4,354,492 · App. 06/215,949

Medical administration set with backflow check valve

Inventor: Charles J. McPhee
Patented Case View Patent ↗
Granted: Oct 19, 1982 Filed: Dec 12, 1980
Inventor
Charles J. McPhee
Assignee (at issue)
American Hospital Supply Corp.

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 4,354,492
App. No.
06/215,949
Filed
1980-12-12
Granted
1982-10-19
Kind
A