Brevetti   Gran Bretagna  

Patent:GB292223

Brevetto:	GB 292223
Titolo:	Improvements in and relating to calculating discs
Data:	14.06.1928
Luogo:
Nazione:	Gran Bretagna
Persona:	Jonas Harald Faxen
Ditta:
Link interni:
Keywords:
Link al brevetto: (without guarantee)	GB292223

Aus der Patentschrift GB292223

• DATUM: 14.06.1928
• TITEL: Improvements in and relating to calculating discs
• PERSON: JONAS HARALD FAXEN