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| Patents Granted on 1984-05-01 | |||||
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| Number | Date | Patentee | Title | Type | |
| D273,664 | May 01, 1984 | T. Sanpei, I. Mizuno, H. Sakata | Micrometer | micrometers | |
| CA-1,166,748 | May 01, 1984 | R. Johnstone | Unmanned diagnostic communications system for computer controlled machine tools | numerically controlled milling machines | |
| CA-1,167,668 | May 01, 1984 | K.A. Wollermann | Spindle keylock | metalworking machine mechanisms | |
| 4,445,678 | May 01, 1984 | I.S. George | Precision Aligned Split V-Block | V blocks | |