|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 = '123') AND (category.subclass = '169P') ORDER BY date ASC, patent, type|
Total of 3 patents found where: Class is '123'; Subclass is '169P';
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||1,128,747||February 16, 1915||Method of Manufacturing Porcelain Insulators
Manufacturing process for porcelain insulator firing unglazed, then filling porous porcelain with oxidizable oil and rendering the oil stable with ozone to form a coating to replace expense of firing on a glaze
|U||1,700,066||January 22, 1929||Insulator for Radio Frequency Currents
Radio strain insulator made from Pyrex glass for antennas
|MARSHALL, Albert E.
||Radio||Corning Glass Works|
|U||2,357,550||September 5, 1944||Insulator
RFI coating applied before firing the insulator
|ROWLAND, Davidge H.
||RFI||Locke Insulator Corp.|
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