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US Patent: 257,494
Gas-exhaust regulator
Patentee:
Reuben Kidder Huntoon - Franklin, MA

USPTO Classifications:
137/505.31, 48/173

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
E. B. Pratt
R. H. Eddy

Patent Dates:
Applied: Nov. 21, 1881
Granted: May 09, 1882

Patent Pictures:
USPTO pdf tiff
Google Patents
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"Vintage Machinery" entry for R. K. Huntoon

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