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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 = 'DU BOIS') AND (first_name = 'David Irvin') ORDER BY date ASC, patent, type

Total of 2 patents found where: Last Name is 'DU BOIS'; First Name is 'David Irvin';

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T / S Patent Date Description Patentee Category Assigned To
 1932
U 1,844,549 February 9, 1932 Glass Working Machine
Press for making glass insulators		 HEADLEY, Benjamin T.
DU BOIS, David Irvin
KOOB, Bernard H.
LOBB, Frank H.
 Press Whitall Tatum Co.
 1936
U 2,052,343 August 25, 1936 Plastic Forming Apparatus
Insulator press		 DU BOIS, David Irvin
 Press Whitall Tatum Co.

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