|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 = '340') ORDER BY patent ASC, type|
Total of 3 patents found where: Class is '340';
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||127,041||May 21, 1872||Improvement in Fire Alarm Signal Boxes
Design for a fire alarm signal box
|U||362,477||May 3, 1887||Electric Police Call Alarm Box
Police call alarm box with a key
|COUGHLIN, John J.
||Alarm Box||3/4 to Hern, Prendergast, Oakman|
|U||1,976,378||October 9, 1934||Aviation Marker
Aviation warning light attached to a suspension insulator
|VROOMAN, Edward C.
||Misc||Locke Insulator Corp.|
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