|SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN name ON name.patent = patent.patent AND name.type = patent.type WHERE (last_name = 'RIDDLE') AND (first_name = 'Frank H.') ORDER BY patent ASC, type|
Total of 1 patents found where: Last Name is 'RIDDLE'; First Name is 'Frank H.';
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|T / S||Patent||Date||Description||Patentee||Category||Assigned To|
|U||1,723,174||August 6, 1929||Use of Dumortierite
Porcelain composition use the mineral dumortierite which allows firing at a lower temperature
|JEFFERY, Joseph A.
RIDDLE, Frank H.
|Porcelain||Champion Porcelain Co.|
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