Invention Grant
- Patent Title: Screw-machine.
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Application No.: US1904223881Application Date: 1904-09-09
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Publication No.: US827659APublication Date: 1906-07-31
- Inventor: PEARSON WALTER B , ROBERTS CHARLES E
- Applicant: STANDARD SCREW
- Assignee: Standard Screw
- Current Assignee: Standard Screw
- Priority: US1902106620 1902-05-09; US1904223881 1904-09-09
Information query
