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…
Tag: Coin
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…