All Patents in class 73/47


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All Patents in class 73/47
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
1,467,558	Sep. 11, 1923	J. Okill	Pressure Indicator for Internal Combustion Engines and the Like	vacuum and pressure gauges
2,823,542	Feb. 18, 1958	G.M. Walraven, M.K. Kuehl	Compression Gauge for Internal Combustion Engines and the Like