|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 = '57') AND (category.subclass = '213') ORDER BY date ASC, patent, type|
Total of 2 patents found where: Class is '57'; Subclass is '213';
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||950,454||February 22, 1910||Lightning Rod
Conductor cable made by spiralling one wire around a straight wire and making a cable using multiple pairs
|MOORE, George J.
||Lightning Rod||Moore Brothers Lightning Rod Co.|
|U||1,135,940||April 13, 1915||Lightning Rod Cable
Flexible lightning rod conductor made of twisted and spiralled wire cable
|JUEL, Peter J.
||Lightning Rod||H. S. Rottenborg and H. C. Hansen|
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