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US Patent: 371,518
Double-acting force-pump
Patentees:
Andrew Potter (exact or similar names) - Salem, OH
Charles H. Betts (exact or similar names) - Salem, OH

USPTO Classifications:
417/548

Tool Categories:

Assignees:
Silver & Deming Mfg. Co. - Salem, OH

Manufacturer:
Not known to have been produced

Witnesses:
Joseph Reitzell
William R. King

Patent Dates:
Applied: Nov. 13, 1886
Granted: Oct. 11, 1887

Patent Pictures:
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Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Silver & Deming Mfg. Co.

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