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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 = 'WALCH') AND (first_name = 'Gustav Theodor') ORDER BY date ASC, patent, type

Total of 1 patents found where: Last Name is 'WALCH'; First Name is 'Gustav Theodor';

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T / S Patent Date Description Patentee Category Assigned To
 1893
U 508,068 November 7, 1893 Lightning Conductor
Strong, durable lightning rod easily attached to a building with conductor passing through the hollow casing (also patented in England, Switzerland, Belgium, Italy, Spain, France)		 WALCH, Gustav Theodor
 Lightning Rod  

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