IP Library › Granted Patent US 4,543,087
Granted Patent Utility
US 4,543,087 · App. 06/551,102

Double lumen catheter tip

Inventors: Richard K. Sommercorn, Wayne E. Quinton
Patented Case View Patent ↗
Granted: Sep 24, 1985 Filed: Nov 14, 1983
Inventors
Richard K. Sommercorn
Wayne E. Quinton
Assignee (at issue)
QuinTron Instrument Company, 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 4,543,087
App. No.
06/551,102
Filed
1983-11-14
Granted
1985-09-24
Kind
A