Quiz: Can You Guess What These Inventions Were Supposed to Do? – Slate Magazine


Slate Magazine

Quiz: Can You Guess What These Inventions Were Supposed to Do?
Slate Magazine
The Patent Act of 1790 tackled this issue by requiring all patent applicants to submit a scaled-down model of their invention. This spawned a vibrant industry of professional patent model makers. They crafted hundreds of thousands of models before the

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