Friday, November 14, 2014

Clifton M. Ingram Invented Well drilling tool & Railroad crossing flag signal

Clifton M. Ingram was born in the mid to late 1800s. There are no records that say when he died. In 1925, Ingram invented a drilling tool and a railroad crossing flag. Both of these items are still used today.
  • #1,526,215, 2/10/1925, Railroad crossing flag signal
  • #1,542,776, 6/16/1925, Well drilling tool

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