Patent

Patent:US1876118 06.09.1932 Albert S. Wheelbarger Grover C. Coil Ohmer (P) Car Register Comp. : Totalizer and printing means therefor
Patent:US646757 03.04.1900 Ohmer, John (P) Ohmer (P) Car Register Comp. : Fare-recorder
Patent:US694322 25.02.1902 Ohmer, John (P) Tyler, Hiram (P) William F. Breidenbach Ohmer (P) Car Register Comp. : Fare-register
Patent:US715129 02.12.1902 Ohmer, John (P) Tyler, Hiram (P) Ohmer (P) Car Register Comp. : Fare-register

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