IP Library › Granted Patent US 4,642,089
Granted Patent Utility
US 4,642,089 · App. 06/696,147

Unitary venous return reservoir with cardiotomy filter

Inventors: Paul F. Zupkas, Francis M. Servas, Todor Pavlov, Steven G. Kelly
Patented Case View Patent ↗
Granted: Feb 10, 1987 Filed: Jan 29, 1985
Inventors
Paul F. Zupkas
Francis M. Servas
Todor Pavlov
Steven G. Kelly
Assignee (at issue)
Shiley Incorporated

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 4,642,089
App. No.
06/696,147
Filed
1985-01-29
Granted
1987-02-10
Kind
A