Brevetti   Gran Bretagna  

Patent:GB220758

Brevetto:	GB 220758
Titolo:	Improvements in calculating machines
Data:	28.08.1924
Luogo:
Nazione:	Gran Bretagna
Persona:	Charles Felicien Blacher
Ditta:	Guy S Calculating Machines
Link interni:	Britannic
Keywords:
Link al brevetto: (without guarantee)	GB220758

Aus der Patentschrift GB220758

• DATUM: 28.08.1924
• TITEL: Improvements in calculating machines
• PERSON: CHARLES FELICIEN BLACHER

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