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Patent:US2660375


Patent:US 2660375
Title:Photographic Exposure Calculator
Date:24.11.1953
Place:
Country:USA
Person:Henri Carquillat Pierre
Company:
Internal Links:Rechenuhr
Keywords:
Link to the patent office:
(without guarantee)
 US2660375 (espacenet),  US2660375 (uspto)


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Aus der Patentschrift US2660375