Invention Grant
- Patent Title: Calculating-machine.
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Application No.: US1911636305Application Date: 1911-06-30
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Publication No.: US1019996APublication Date: 1912-03-12
- Inventor: SIEGFRIED IRA D
- Applicant: SIEGFRIED IRA D
- Assignee: Ira D Siegfried
- Current Assignee: Ira D Siegfried
- Priority: US1911636305 1911-06-30
Information query
