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Patent:US3448254


Patent:US 3448254
Title:Data checking system
Date:03.06.1969
Place:The Hague und Bielefeld
Country:USA
Person:Jacobus Verhoeff
Company:Anker (P)-Werke AG
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US3448254 (espacenet),  US3448254 (uspto)


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