1879 – Walking Steam Tractor – Praul (American)

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IMPROVEMENT IN TRACTION-ENGINES
 JOHN E. PRAUL
Patent number: 221354
Filing date: Sep 26, 1879
Issue date: Nov 4, 1879. See patent here.

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This entry was posted on Monday, June 14th, 2010 at 7:16 pm and is filed under Walking Machines. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.

One Response to “1879 – Walking Steam Tractor – Praul (American)”

  1. David Says:

    Amazing!!!