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Original Assignee Davison Chemical Corp Priority date (The priority date is an assumption and is not a legal conclusion.
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Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US696351A Inventor Paul B Davis James N Pryor Current Assignee (The listed assignees may be inaccurate.
Cobalt chloride system in weather indicator devices pdf#
Google Patents US2526938A - Moisture indicatorÄownload PDF Info Publication number US2526938A US2526938A US696351A US69635146A US2526938A US 2526938 A US2526938 A US 2526938A US 696351 A US696351 A US 696351A US 69635146 A US69635146 A US 69635146A US 2526938 A US2526938 A US 2526938A Authority US United States Prior art keywords color indicator solution moisture silica Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.