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US Patent: 603,391
Pressure-recorder
Patentee:
Frank Leslie Wolfe - Medford, MA

USPTO Classifications:
346/123, 346/72, 73/712, 73/715

Tool Categories:
propulsion and energy : steam apparatus : stationary boilers : steam pressure gauges

Assignees:
Crosby Steam Gage & Valve Co. - Boston, MA

Manufacturer:
Crosby Steam Gage & Valve Co. - Boston, MA

Witnesses:
Arthur L. Bowker
Joshua H. Millett

Patent Dates:
Applied: Nov. 21, 1896
Granted: May 03, 1898

Patent Pictures:
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"Vintage Machinery" entry for Crosby Steam Gage & Valve Co.

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