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US Patent: 675,528
Valve Device for Pneumatic Hoists
Patentee:
Robert A. Rutherford (exact or similar names) - Philadelphia, PA

USPTO Classifications:
137/627.5, 91/20, 91/390, 91/417R, 91/450

Tool Categories:
industrial tools : industrial valves
material handling : hoists, winches, come-alongs

Assignees:
Pedrick & Ayer Co. - Philadelphia, PA

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Oct. 11, 1900
Granted: Jun. 04, 1901

Patent Pictures:
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Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Pedrick & Ayer

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