Brevetti   Gran Bretagna  

Patent:GB340600

Brevetto:	GB 340600
Titolo:	Improvements in or relating to calculating apparatus
Data:	19.12.1930
Luogo:
Nazione:	Gran Bretagna
Persona:	John Whitworth Jones
Ditta:
Link interni:	Rechenscheibe
Keywords:
Link al brevetto: (without guarantee)	GB340600

Aus der Patentschrift GB340600

• DATUM: 19.12.1930
• TITEL: Improvements in or relating to calculating apparatus
• PERSON: JOHN WHITWORTH JONES