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US Patent: 785,438
Pressure Gage
Patentee:
Charles E. Sargent (exact or similar names) - Chicago, Cook County, IL

USPTO Classifications:
116/272, 200/81.6, 73/749

Tool Categories:
gauges : vacuum and pressure gauges

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Sep. 24, 1904
Granted: Mar. 21, 1905

Patent Pictures:
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