Electric Bath Patent Model

This is the original patent model for an Electro-Therapeutic Bathing Apparatus, invented by William W. Karshner. The patent was filed on January 25, 1859.

After President George Washington established the first Patent Act, these miniature-scale models that showed how inventions worked were required by the United States Patent and Trade Office until 1880.

Details:

Made of wood and tin-plate
1858

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