IP Library › Granted Patent US 4,256,474
Granted Patent Utility
US 4,256,474 · App. 05/962,000

Filter housing and filter assemblies utilizing the same

Inventors: L. Joseph Berger, Jr., Denis D. Guequierre
Patented Case View Patent ↗
Granted: Mar 17, 1981 Filed: Nov 20, 1978
Inventors
L. Joseph Berger, Jr.
Denis D. Guequierre
Assignee (at issue)
Finite Filter 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 4,256,474
App. No.
05/962,000
Filed
1978-11-20
Granted
1981-03-17
Kind
A