Brevetti   Gran Bretagna  

Patent:GB640445

Brevetto:	GB 640445
Titolo:
Data:	19.07.1950
Luogo:
Nazione:	Gran Bretagna
Persona:
Ditta:	Felt und Tarrant (P)
Link interni:	Comptometer
Keywords:
Link al brevetto: (without guarantee)	GB640445

Aus der Patentschrift GB640445

• DATUM: 19.07.1950
• TITEL: Improvements in or relating to key-responsive calculating machines
• PERSON: FELT TARRANT MFG COMPANY