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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 = 'HAMMEL') AND (first_name = 'Victor F.') ORDER BY date ASC, patent, type

Total of 2 patents found where: Last Name is 'HAMMEL'; First Name is 'Victor F.';

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T / S Patent Date Description Patentee Category Assigned To
 1937
U Specimen known 2,089,791 August 10, 1937 Method of Making Electrical Insulators
CD 240.2, method of making insulator described in 2,191,152		 HAMMEL, Victor F.
 Insulator  
 1940
U Specimen known 2,191,152 February 20, 1940 Electrical Insulator
CD 240.2 with metal saddle embedded in crown for RFI (see 2,089,791)		 HAMMEL, Victor F.
 Insulator  

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