Brevetti   Stati Uniti  

Patent:US2442428

Brevetto:	US 2442428
Titolo:	Calculating Device
Data:	01.06.1948
Luogo:
Nazione:	Stati Uniti
Persona:	Mumma Robert E
Ditta:	NCR (P)
Link interni:
Keywords:
Link al brevetto: (without guarantee)	US2442428 (espacenet),  US2442428 (uspto)

Aus der Patentschrift US2442428

• DATUM: 01.06.1948
• TITEL: Calculating device
• PERSON: NCR CO
• Patent Family: ( Patent:DE873454, Patent:GB601122, Patent:GB601147, Patent:GB601148, Patent:GB601149, Patent:US2442428, Patent:US2495075, Patent:US2503127, Patent:US2524115, Patent:US2533739 )