BROWN, BONIARD I.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4393948 Rock boring bit with novel teeth and geometryExpiredApr 01, 81Jul 19, 83[E21B]
4372144 Wrap ring assembly for precision no-draft forgingExpiredApr 27, 81Feb 08, 83[B21D]

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