Wednesday, March 3, 2010

Ed Roth US Patent 3,776,353 - Trike - Circa 1973









Thanks to Alex for sending over this document months ago. Check out the schematics and text as I'm sure you'll be amazed! Roth's patent has expired so this legal to post this info!

1 comment:

  1. It's always legal to post a patent regardless of whether it is active. What is more interesting is that since the patent has expired you can now use the schematic rt build your own trike.

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