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Patent:US2870670


Patent:US 2870670
Title:Exposure calculator for flash light photography
Date:27.01.1959
Place:Pasadena, CA
Country:USA
Person:Donald W. Norwood
Company:
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US2870670 (espacenet),  US2870670 (uspto)


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