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Priority to JP1972115984UpriorityCriticalpatent/JPS5116555Y2/ja
Publication of JPS4971897UpublicationCriticalpatent/JPS4971897U/ja
Application grantedgrantedCritical
Publication of JPS5116555Y2publicationCriticalpatent/JPS5116555Y2/ja
B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
B25B21/004—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet type