CHASANOW, Judge.
During the period 1972 to 1978, William Gramling (Gramling) and Denver Roberts (Roberts) developed an invention called an "Autoswab," a self-propelled device used to extract oil from oil wells. The Autoswab forces oil and water out of oil wells. The device is placed in the well casing, it travels below the surface of the oil, and a rubber seal is engaged. Natural gas, which is normally present in an oil well, is trapped below the device and pressure...
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