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Patent:US1676912

Patent:	US 1676912
Title:	Device for calculating time
Date:	10.07.1928
Place:
Country:	USA
Person:	Meacham Frederick C
Company:
Internal Links:
Keywords:
Link to the patent office: (without guarantee)	US1676912 (espacenet),  US1676912 (uspto)

Aus der Patentschrift US1676912

• DATUM: 10.07.1928
• TITEL: Device for calculating time