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Patent:USD184042


Patent:US D184042
Title:Abacus
Date:09.12.1958
Place:
Country:USA
Person:A. G. Dochterman and E. R. Dochterman
Company:
Internal Links:Kugelrechner
Keywords:
Link to the patent office:
(without guarantee)
 USD184042 (espacenet),  USD184042 (uspto)


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