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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 = 'EMMINGER') AND (first_name = 'David R. P.') ORDER BY date ASC, patent, type

Total of 1 patents found where: Last Name is 'EMMINGER'; First Name is 'David R. P.';

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T / S Patent Date Description Patentee Category Assigned To
 1872
U Specimen known 123,878 February 20, 1872 Improvement in Telegraph Insulators
CD 141.9, four projections to reduce surface contact 		EMMINGER, David R. P.
 Insulator  

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