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Patent:GB191021170

Patent:	GB 191021170
Title:	Improvements in Adding Machines
Date:	23.03.1911
Place:
Country:	Great Britain
Person:	Quentell, William Prehn (P)
Company:
Internal Links:
Keywords:
Link to the patent office: (without guarantee)	GB191021170

Aus der Patentschrift GB191021170

• DATUM: 23.03.1911
• TITEL: Improvements in Adding Machines.
• PERSON: QUENTELL WILLIAM PREHN US