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Patent No. 1,982,665. “Explosion Turbine"; granted to Hans Holzwarth, of Dusseldorf, Germany.
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current | 22:43, 1 April 2020 | (664 KB) | RobertG (Talk | contribs) | (Patent No. 1,982,665. “Explosion Turbine"; granted to Hans Holzwarth, of Dusseldorf, Germany.) |
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