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US Patent: 1,492,754
Engine Indicator
Patentee:
John H. Sheats (exact or similar names) - Dayton, Montgomery County, OH

USPTO Classifications:
346/4, 73/114.18

Tool Categories:
propulsion and energy : internal combustion engines : internal combustion engine indicators
industrial tools : pressure indicators

Assignees:
General Motors Research Corp. - Dayton, Montgomery County, OH

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Mar. 15, 1921
Granted: May 06, 1924

Patent Pictures:
USPTO (New site tip)
Google Patents
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