|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 = '425') AND (category.subclass = '409') ORDER BY date ASC, patent, type|
Total of 1 patents found where: Class is '425'; Subclass is '409';
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||455,400||July 7, 1891||Manufacture of Knob Molds
Method of forming mold boxes for the manufacture of knobs.
||Knob||H. Brunt & Son|
Total of 0.01 seconds