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US Patent: 66,028
Improved hydraulic-pressure regulator
Patentee:
Isaac Judson (exact or similar names) - New Haven, CT

USPTO Classifications:
137/495, 137/505.18

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
E. W. Baldwin
R. Fitzgerald
Patent Dates:
Granted: Jun. 25, 1867

Patent Pictures: [ 1 | 2 ]
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Vintage Machinery entry for Judson & Pardee

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