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US Patent: 1,467,558
Pressure Indicator for Internal Combustion Engines and the Like
Patentee:
John Okill (exact or similar names) - Rock Ferry, Chester County, England

USPTO Classifications:
33/784, 33/819, 73/47, 73/744

Tool Categories:
gauges : vacuum and pressure gauges

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Apr. 05, 1920
Granted: Sep. 11, 1923

Patent Pictures:
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