Leonid Yakovlevich Ioffe

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Leningrad, SU

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Patents Grantslast 30 patents

Information Patent Grant
Ship reduction gear for contrarotating screws
- Patent number 4,016,777
- Issue date Apr 12, 1977
- Nikolai Stepanovich Ryzhkov
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT