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All Patents in class 123/188.1 | |||||
Number | Date | Patentee | Title | Type | |
1,108,266 | Aug. 25, 1914 | W. Spacke | Inlet-Valve for Internal-Combustion Engines | internal combustion engine valves | |
1,395,658 | Nov. 01, 1921 | J. Scholtz | Gas Engine | valves |