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US Patent: 841,454
Pressure Gage
Patentee:
Charles E. Sargent (exact or similar names) - Chicago, Cook County, IL

USPTO Classifications:
73/747

Tool Categories:
gauges : vacuum and pressure gauges

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Nov. 03, 1904
Granted: Jan. 15, 1907

Patent Pictures:
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