Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by RIDGE TOOL Co OF ELYRIA filed Critical RIDGE TOOL Co OF ELYRIA Priority to US88425A priority Critical patent/US2121197A/en Application granted granted Critical Publication of US2121197A publication Critical patent/US2121197A/en Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links Original Assignee RIDGE TOOL Co OF ELYRIA Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US88425A Inventor Elmer F Jackman Current Assignee (The listed assignees may be inaccurate.
Google Patents US2121197A - Screw extractorĭownload PDF Info Publication number US2121197A US2121197A US88425A US8842536A US2121197A US 2121197 A US2121197 A US 2121197A US 88425 A US88425 A US 88425A US 8842536 A US8842536 A US 8842536A US 2121197 A US2121197 A US 2121197A Authority US United States Prior art keywords bore extractor stud torque shank Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.
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