IP Library › Granted Patent US 4,969,061
Granted Patent Utility
US 4,969,061 · App. 07/300,784

Particulate removing means for cartridges

Inventors: Robert S. Patterson, Roy J. Orr
Patented Case View Patent ↗
Granted: Nov 6, 1990 Filed: Jan 23, 1989
Inventors
Robert S. Patterson
Roy J. Orr
Assignee (at issue)
IO-Mega Holding Corporation

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 4,969,061
App. No.
07/300,784
Filed
1989-01-23
Granted
1990-11-06
Kind
A