| 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 = '264') AND (category.subclass = '138') ORDER BY date ASC, patent, type |
Total of 3 patents found where: Class is '264'; Subclass is '138';
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 |
| 1931 | ||||||
| U | 1,808,105 | June 2, 1931 | Insulator Cutter and Method of Treating Insulators Manufacturing method to cut out the top and bottom recess of a Hewlett suspension disk and ready for cutting the holes for link passages |
GOUVERNEUR, Minor F. H. |
Manufacturing | Locke Insulator Corp. |
| 1941 | ||||||
| U | 2,234,391 | March 11, 1941 | Method of Manufacturing Electric Insulators Method of making station post insulators with metal caps |
TAYLOR, John J. |
Insulator | The Ohio Brass Co. |
| 1946 | ||||||
| U | 2,395,295 | February 19, 1946 | Method of Producing Insulators Improved method of jiggering and plunging |
ROWLAND, Davidge H. |
Manufacturing | |
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