IP Library › Granted Patent US 4,490,144
Granted Patent Utility
US 4,490,144 · App. 06/465,384

Urine drainage receptacle with a normally open reflux valve

Inventor: Carl J. Steigerwald
Patented Case View Patent ↗
Granted: Dec 25, 1984 Filed: Feb 10, 1983
Inventor
Carl J. Steigerwald
Assignee (at issue)
The Kendall Company LP

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 4,490,144
App. No.
06/465,384
Filed
1983-02-10
Granted
1984-12-25
Kind
A