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Patent
Suchergebnisse für: Mechanical Accountant
- Patent:US631345 21.06.1899 Turck, Joseph Abraham Valentine (P) Mechanical Accountant (P) Co. : Adding-machine
- Patent:US679348 30.07.1901 Turck, Joseph Abraham Valentine (P) Mechanical Accountant (P) Co : Calculating machine
- Patent:US720086 10.01.1903 Turck, Joseph Abraham Valentine (P) Mechanical Accountant (P) Co : Calculating Machine