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Priority to JP1986135220UpriorityCriticalpatent/JPS6328476Y2/ja
Publication of JPS6251392UpublicationCriticalpatent/JPS6251392U/ja
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Publication of JPS6328476Y2publicationCriticalpatent/JPS6328476Y2/ja
Method of and apparatus for providing pulse trains whose frequency is variable in small increments and whose period, at each frequency, is substantially constant from pulse to pulse