IP Library › Granted Patent US 4,882,050
Granted Patent Utility
US 4,882,050 · App. 07/235,046

Filter plate, filter plate element, and filter comprising same

Inventor: Henry B. Kopf
Patented Case View Patent ↗
Granted: Nov 21, 1989 Filed: Aug 22, 1988
Inventor
Henry B. Kopf

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 4,882,050
App. No.
07/235,046
Filed
1988-08-22
Granted
1989-11-21
Kind
A