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Compressed-Air Engine

Description: Patent for a compressed air engine. Illustrations included.
Date: September 5, 1911
Creator: Murray, Dick H.
Partner: UNT Libraries Government Documents Department

Resilient Wheel

Description: Patent for Resilient Wheel
Date: September 5, 1916
Creator: Kettler, Martin F
Partner: UNT Libraries Government Documents Department

Coin-Controlled Vending-Machine

Description: Patent for a pencil vending machine that is coin-operated, with illustrations.
Date: September 5, 1911
Creator: Mathes, John W.
Partner: UNT Libraries Government Documents Department
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