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| Patents for Takasi Sanpei | |||||
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| Number | Date | Patentee | Title | Type | |
| D273,664 | May 01, 1984 | T. Sanpei, I. Mizuno, H. Sakata | Micrometer | micrometers | |
| D274,413 | Jun. 26, 1984 | T. Sanpei, M. Nakahara, I. Mizuno, H. Sakata | Micrometer | micrometers | |