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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 = 'CROWELL') AND (first_name = 'David F.') ORDER BY date ASC, patent, type

Total of 1 patents found where: Last Name is 'CROWELL'; First Name is 'David F.';

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T / S Patent Date Description Patentee Category Assigned To
 1876
U 184,509 November 21, 1876 Improvement in Telegraph Insulators
Self-tying head with threaded end to screw into pole		 CUNNINGHAM, Robert A.
CROWELL, David F.
 Self-tying Miscellaneous  

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