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Author Topic: Pat'd 1871 Frisbie's Beam Engine  (Read 1156 times)

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Re: Pat'd 1871 Frisbie's Beam Engine
« on: January 23, 2020, 10:42:25 pm »
Quote from: CBWho on January 22, 2020, 04:22:33 pm
How does the safety valve work?

Here ya go

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