IP Library › Granted Patent US 5,091,231
Granted Patent Utility
US 5,091,231 · App. 07/627,194

Retortable container

Inventor: Keith Parkinson
Patented Case View Patent ↗
Granted: Feb 25, 1992 Filed: Dec 13, 1990
Inventor
Keith Parkinson
Assignee (at issue)
QuesTech Ventures, 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 5,091,231
App. No.
07/627,194
Filed
1990-12-13
Granted
1992-02-25
Kind
A