Patents
- US Patent 644814 Rotary Engine, Jan Brons, dated July 31, 1899
- US Patent 868839 Hydrocarbon Engine, Jan Brons & Nanno Timmer, dated October 7, 1907
- US Patent 1759776 Multicylinder Combustion Motor, Jan Brons & Naamloze Vennoot (nameless partner), dated January 7, 1927
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