| 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 = '411') AND (category.subclass = '411') ORDER BY date ASC, patent, type |
Total of 4 patents found where: Class is '411'; Subclass is '411';
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 |
| 1906 | ||||||
| U | 830,501 | September 11, 1906 | Protecting Bushing for Electric Circuit Wires Bushing with screw threads |
GOEHST, John H. |
Bushing | Federal Electric Co. |
| 1912 | ||||||
| U | 1,045,536 | November 26, 1912 | Insulator Pin Pin (metal) with elastic washer under threads to firmly hold insulator, prevent breakage |
ETTE, Charles G. |
Pin | Ette Investment Co. |
| 1914 | ||||||
| U | 1,095,860 | May 5, 1914 | Insulator Holder Pin composed of metal wire |
HEFFNER, Herman C. |
Pin | |
| 1916 | ||||||
| U | 1,202,419 | October 24, 1916 | Insulator Supporting Pin Pin, metal with bolting bracket and spring for threads |
PEIRCE, JR., Charles L. |
Pin | 1/2 to Hubbard & Co. |
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