Brevetti   Gran Bretagna  

Patent:GB190521651

Brevetto:	GB 190521651
Titolo:	Improvements in Adding Machines
Data:	12.04.1906
Luogo:
Nazione:	Gran Bretagna
Persona:	Welton, Frank Ransom (P)
Ditta:
Link interni:
Keywords:
Link al brevetto: (without guarantee)	GB190521651

Aus der Patentschrift GB190521651

• DATUM: 12.04.1906
• TITEL: Improvements in Adding Machines.
• PERSON: WELTON FRANK RANSOM US