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SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN category ON category.patent = patent.patent AND category.type = patent.type WHERE (category.class = '439') AND (category.subclass = '816') ORDER BY date ASC, patent, type

Total of 2 patents found where: Class is '439'; Subclass is '816';

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T / S Patent Date Description Patentee Category Assigned To
 1916
U 1,208,874 December 19, 1916 Insulator
Self-tying		 WILSON, William E.
 Self-tying Miscellaneous  
 1948
U 2,454,348 November 23, 1948 Latch for Electric Fence Gates
Latch for electric fence using Surge insulators (see 2,350,420) (see design 126,721) (see design 126,722) (see 2,454,348) [see picture 170540955]		 SCHILLING, Lorell John
 Electric Fence Babson Brothers Co.

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