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Patent Searching and Data

Document Type and Number:
Japanese Patent JPS4930421
Kind Code:
Application Number:
Publication Date:
March 15, 1974
Filing Date:
June 23, 1972
Export Citation:
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International Classes:
A01B63/24; A01D67/00; A01D75/00; B62D13/00; (IPC1-7): B62D13/00

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