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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 = '49') ORDER BY date ASC, patent, type

Total of 3 patents found where: Class is '49';

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T / S Patent Date Description Patentee Category Assigned To
 1877
U 198,471 December 25, 1877 Improvement in Lightning Rods
Lightning rod composed of sheet metal formed into a pair of tubes with rod laying between the tubes and multiple tubes and rods can be used		 SMITH, Charles H.
 Lightning Rod  
 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.
 1956
U 2,738,838 March 20, 1956 Glass Block Ventiliating Device
Operable glass block vent		 SUTTER, John H.
 OI Owens-Illinois Glass Co.

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