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Patent:US2975971


Patent:US 2975971
Title:Calc Mach with Digit Keys and Function Control Keys
Date:21.03.1961
Place:
Country:USA
Person:Schenk
Company:Oerlikon (P)
Internal Links:Monroe Mach 1.07
Keywords:
Link to the patent office:
(without guarantee)
 US2975971 (espacenet),  US2975971 (uspto)


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Aus der Patentschrift US2975971