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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 = 'LAVENS') AND (first_name = 'Erwin') ORDER BY type ASC, date, patent

Total of 1 patents found where: Last Name is 'LAVENS'; First Name is 'Erwin';

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T / S Patent Date Description Patentee Category Assigned To
 1891
U 450,294 April 14, 1891 Insulator
Hanger - bell type for trolley
LIEB, Charles A.
LAVENS, Erwin
Hanger Charles A. Lieb

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