Brevetti   Gran Bretagna  

Patent:GB215648

Brevetto:	GB 215648
Titolo:	Improvements in circular calculators
Data:	15.05.1924
Luogo:
Nazione:	Gran Bretagna
Persona:	Harold Fowler, William Henry Fowler
Ditta:
Link interni:
Keywords:
Link al brevetto: (without guarantee)	GB215648

Aus der Patentschrift GB215648

• DATUM: 15.05.1924
• TITEL: Improvements in circular calculators
• PERSON: WILLIAM HENRY FOWLER