|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 = '285') AND (category.subclass = '399') ORDER BY date ASC, patent, type|
Total of 4 patents found where: Class is '285'; Subclass is '399';
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||100,549||March 8, 1870||Improvement in Lightning Rods
Lightning rod made of two sheets of metal forming double tubing with flanges and twisted
|U||118,166||August 15, 1871||Improvement in Lightning Rods
Coupling for tubular or solid lightning rods that is screwed together and made solid by a ferrule secured with a pin
|STEPHENSON, George A.
SUTLIFF, Oliver L.
|Lightning Rod Coupling|
|U||145,641||December 16, 1873||Improvement in Couplings for Tubular Lightning Rods
Means of coupling tubular lightning rods
|FRITSCH, Joseph W.
|U||214,545||April 22, 1879||Improvement in Lightning Rod Couplings
Lightning rod coupling with one tapered end to fit snugly in the other end (see reissue 9,145)
|BACON, Elmore C.
||Lightning Rod Coupling|
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