Bauldock, Gerald Sr.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7490834 Board GameExpiredJan 05, 06Feb 17, 09[A63F]
7025593 Teaching circumference instrumentExpiredNov 20, 03Apr 11, 06[G09B]
6941667 Teaching sin and cosine instrumentExpiredNov 20, 03Sep 13, 05[G09B, B43L]
6872078 Teaching cylinder instrumentExpiredNov 30, 03Mar 29, 05[G09B]

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