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in creator/contributor: "Johnson, Willie H."  
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Compound Engine.

Description: Patent for certain new and useful improvements in compound engines, including instructions and illustrations.
Date: June 20, 1899
Creator: Johnson, Willie H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Pipe-Cutter

Description: Patent for pipe cutter. This is an improvement to the pipe cutter which already exists. A portion of the pipe "is removed. . . instead of the material being displaced and wedged apart without removing as is the case with the commonly used cutter." (Johnson)
Date: November 24, 1914
Creator: Johnson, Willie H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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