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Individual
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Individual
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Priority to JP10298976ApriorityCriticalpatent/JPS5328802A/en
Publication of JPS5328802ApublicationCriticalpatent/JPS5328802A/en
JP10298976A1976-08-271976-08-27Internal combustion engines or pumps provided with pistons of circular motion in doughnutttype cylinder
PendingJPS5328802A
(en)