IP Library › Granted Patent US 4,945,558
Granted Patent Utility
US 4,945,558 · App. 07/259,887

Telephone set

Inventor: David C. Deaville
Patented Case View Patent ↗
Granted: Jul 31, 1990 Filed: Oct 19, 1988
Inventor
David C. Deaville
Assignee (at issue)
Mars, Incorporated

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 4,945,558
App. No.
07/259,887
Filed
1988-10-19
Granted
1990-07-31
Kind
A