IP Library Granted Patent US 4,907,600
Granted Patent Utility
US 4,907,600 · App. 07/222,151

Blood collector cylinder with needle ejector

Inventor: Treesa A. Spencer
Patented Case View Patent ↗
Granted: Mar 13, 1990 Filed: Jul 21, 1988
Inventor
Treesa A. Spencer

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 4,907,600
App. No.
07/222,151
Filed
1988-07-21
Granted
1990-03-13
Kind
A