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Showing 1 - 2 results of 2 for search '"efficiency"', query time: 0.04s Refine Results
  1. 1
    by Mitchell, James R., Mitchell, Grady
    Published 1913
    ... is to provide a simple and efficient device for attaching an evener bar to the draft tongue of the machine....
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    Patent
  2. 2
    by White, Floyd N.
    Published 1920
    ... to manufacture, and one which will be very efficient in operation" (lines 22-25)....
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    Patent
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