IP Library › Granted Patent US 4,772,144
Granted Patent Utility
US 4,772,144 · App. 06/919,537

Ribbon cartridge having removable capstan

Inventor: John M. Weed
Patented Case View Patent ↗
Granted: Sep 20, 1988 Filed: Oct 16, 1986
Inventor
John M. Weed
Assignee (at issue)
Burrows 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 4,772,144
App. No.
06/919,537
Filed
1986-10-16
Granted
1988-09-20
Kind
A