All Patents in class 73/47


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