Coin Archives - Patent Yogi LLC

First coin-operated telephone was patented this day in 1889 - This Day in Patent History

On Aug. 13, 1889 William Gray of Hartford, Connecticut, received a patent for a coin-operated telephone. Soon he formed the Gray Telephone Pay Station Company…

This Day in Patent History - On January 31, 1934, Tower Optical Company patented coin controlled binoculars

On January 31, 1934, Tower Optical Company patented coin controlled binoculars. Tower Optical Company’s binoculars have been used on major tourist sites in the United…