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Patents for John Herbert Vandeventer | |||||
Number | Date | Patentee | Title | Type | |
CA-137,517 | Dec. 26, 1911 | J.H. Vandeventer | Rotary Engine | rotary steam engines | |
AU-160,911 | Apr. 16, 1912 | J.H. Vandeventer | Improvements in Rotary Engines | rotary engines |