Brevetti   Gran Bretagna  

Patent:GB203236

Brevetto:	GB 203236
Titolo:	Improvements in calculating machines
Data:	06.09.1923
Luogo:
Nazione:	Gran Bretagna
Persona:	James Mark Mcginnis Barr
Ditta:
Link interni:
Keywords:
Link al brevetto: (without guarantee)	GB203236

Aus der Patentschrift GB203236

• DATUM: 06.09.1923
• TITEL: Improvements in calculating machines
• PERSON: JAMES MARK MCGINNIS BARR
• Patent Family: ( Patent:DE441641, Patent:FR569041, Patent:GB203236, Patent:US1487703 )