William F. Mangels: Difference between revisions

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* [[The Whip]]
* [[The Whip]]


== Related Patents ==
* Pleasure railway. (October 22, 1929) U.S. Patent No. 1,527,893 [https://drive.google.com/file/d/1Y-19uw0Cs9j7vh7NNPafceDbIXL8GKW0/view?usp=sharing PDF]<ref>Mangels, W. F. 1925. "Pleasure railway." U.S. Patent No. 1,527,893. Accessed through the U.S. Patent and Trademark Office [https://drive.google.com/file/d/1Y-19uw0Cs9j7vh7NNPafceDbIXL8GKW0/view?usp=sharing PDF]</ref>
== References ==
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Revision as of 02:39, 24 May 2025