|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 = '403') AND (category.subclass = '338') ORDER BY date ASC, patent, type|
Total of 2 patents found where: Class is '403'; Subclass is '338';
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||74,406||February 11, 1868||Improvement in Lightning Rods
Lightning rod made with twists and folds
|U||1,393,330||October 11, 1921||Electrical Insulator
Links for Hewlett suspension disks (see 1,110,934)
|WELCH, Walter J.
TRACY, Atlee H.
|Suspension||H. M. Byllesby & Co.|
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