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Patent:US3133631


Patent:US 3133631
Title:Case and Slide Rule holder thereon
Date:19.05.1964
Place:
Country:USA
Person:Bolden Charles E
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US3133631 (espacenet),  US3133631 (uspto)


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Aus der Patentschrift US3133631