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Patent:GB307254

Patent:	GB 307254
Title:	Apparatus for measuring distances on charts
Date:	07.03.1929
Place:
Country:	Great Britain
Person:	Frederick Arnold
Company:
Internal Links:
Keywords:
Link to the patent office: (without guarantee)	GB307254

Aus der Patentschrift GB307254

• DATUM: 07.03.1929
• TITEL: Apparatus for measuring distances on charts
• PERSON: FREDERICK ARNOLD