Brevetti   Gran Bretagna  

Patent:GB180695

Brevetto:	GB 180695
Titolo:	Improvements in or relating to calculating apparatus
Data:	27.08.1923
Luogo:
Nazione:	Gran Bretagna
Persona:	Leon Appoullot
Ditta:
Link interni:
Keywords:
Link al brevetto: (without guarantee)	GB180695

Aus der Patentschrift GB180695

• DATUM: 27.08.1923
• TITEL: Improvements in or relating to calculating apparatus
• PERSON: LEON APPOULLOT

Appoullot Rechenscheibe