|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 = '40') ORDER BY date ASC, patent, type|
Total of 2 patents found where: Class is '40';
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|T / S||Patent||Date||Description||Patentee||Category||Assigned To|
|U||1,381,594||June 14, 1921||Strain-Insulator Sign
Combination strain insulator and sign to indicate voltage, etc. Car-Stop They were made by the American Porcelain Co.
|SAUEREISEN, Christian F.
|U||2,173,510||September 19, 1939||Conducting Holder for Luminous Tube Terminals
Neon terminal holder
|BELLOWS, Lewis F. R.
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