|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 = 'D13') AND (category.subclass = '129') ORDER BY date ASC, patent, type|
Total of 3 patents found where: Class is 'D13'; Subclass is '129';
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|
|D||29,741||November 29, 1898||Design for a Third Rail Insulator
Third rail insulator
|HEWLETT, Edward M.
||Third Rail||General Electric Co.|
|D||114,352||April 18, 1939||Design for an Electric Insulator
|TAYLOR, John L.
|U||3,268,655||August 23, 1966||High Voltage Cable Spacer Insulator Device
Aerial spacer to hold three high voltage conductors and keep them spaced apart.
|HAIGH, William Francis
MCMAHON, Eugene Joseph
|Spacer||Fargo Manufacturing Co.|
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