In 1955 Russel E. Oakes invented “automatic tip requester” which comprises an artificial hand and cashbox to be worn around the waist. A “No Sale” sign is displayed if a tip is not sufficient.
Automatic Tip Requesters, 1955 (27/55)
In 1955 Russel E. Oakes invented “automatic tip requester” which comprises an artificial hand and cashbox to be worn around the waist. A “No Sale” sign is displayed if a tip is not sufficient.
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