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Patents for A. S. Dolgorouky | |||||
Number | Date | Patentee | Title | Type | |
DE-6,870 | Aug. 22, 1879 | A.S. Dolgorouky | Innovations to Rotating Machines | rotary steam engines | |
DE-9,066 | Mar. 01, 1880 | A.S. Dolgorouky | Innovations to Rotating Machines | rotary steam engines |