IP Library › Granted Patent US 4,685,997
Granted Patent Utility
US 4,685,997 · App. 06/874,406

Production of demetallized packaging material

Inventor: Donald E. Beckett
Patented Case View Patent ↗
Granted: Aug 11, 1987 Filed: Jun 16, 1986
Inventor
Donald E. Beckett

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 4,685,997
App. No.
06/874,406
Filed
1986-06-16
Granted
1987-08-11
Kind
A