|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 = '174') AND (category.subclass = '31.5') ORDER BY date ASC, patent, type|
Total of 4 patents found where: Class is '174'; Subclass is '31.5';
View a patent by clicking on the patent number. You can sort by any of the columns by clicking on the column name.
|T / S||Patent||Date||Description||Patentee||Category||Assigned To|
|U||461,631||October 20, 1891||Insulating Support for Electric Conductors
|HEWETT, Robert J.
|U||524,659||August 14, 1894||Insulator
Oil cup with means to support the cup from the insulator (see 517,634)
|WINSLOW, George H.
|U||771,297||October 4, 1904||Insulator
Oil reservoir for transformer insulator
|CHESNEY, Cummings C.
||Oil||Stanley Electric Mfg. Co.|
|U||1,190,766||July 11, 1916||Insulating Support
Battery support insulator
|HUBBARD, Albert S.
||Battery||Gould Storage Battery Co.|
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