Brevetti   Gran Bretagna  

Patent:GB335904

Brevetto:	GB 335904
Titolo:	Improvements in and relating to calculating machines
Data:	01.10.1930
Luogo:
Nazione:	Gran Bretagna
Persona:	Friden, Carl Mauritz Fredrick (P)
Ditta:
Link interni:
Keywords:
Link al brevetto: (without guarantee)	GB335904

Aus der Patentschrift GB335904

• DATUM: 01.10.1930
• TITEL: Improvements in and relating to calculating machines
• PERSON: CARL MAURITZ FREDRICK FRIDEN