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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 = '336') AND (category.subclass = '67') ORDER BY category ASC, date, patent, type

Total of 1 patents found where: Class is '336'; Subclass is '67';

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T / S Patent Date Description Patentee Category Assigned To
 Choke Coil
U 1,274,555 August 6, 1918 Choke Coil Mounting
Secure mounting of a choke coil on top of two multipart insulators fitted with metal brackets clamped to the crown (see 1,574,964 and 1,663,007)
JACOBS, Ernest H.
Choke Coil Electrical Engineers Equipment Co.

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