IP Library Granted Patent US 5,389,256
Granted Patent Utility
US 5,389,256 · App. 07/967,196

Filter apparatus for machine tool coolant

Inventors: Stephen N. McEwen, Jay M. Creps, Scott M. McEwen
Patented Case View Patent ↗
Granted: Feb 14, 1995 Filed: Oct 27, 1992
Inventors
Stephen N. McEwen
Jay M. Creps
Scott M. McEwen
Assignee (at issue)
Henry Filters, 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 5,389,256
App. No.
07/967,196
Filed
1992-10-27
Granted
1995-02-14
Kind
A