F
irst U.S. patent issued; granted to inventor Samuel Hopkins for a potash process.
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Today In History- July 31
Owner:This_Day_In_History
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Created:14/02/2008
Modified: 19/07/2011
View Count: 81(Recent: 1)
Forces War Records, Today In History- July 31 (https://nz.forceswarrecords.com/memorial/2494/today-in-history-july-31/facts : accessed 25/05/2024), database and images, https://nz.forceswarrecords.com/memorial/2494/today-in-history-july-31/facts