| 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 = '248') AND (category.subclass = '309.2') ORDER BY date ASC, patent, type |
Total of 8 patents found where: Class is '248'; Subclass is '309.2';
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| T / S | Patent | Date | Description | Patentee | Category | Assigned To |
| 1888 | ||||||
| U | 386,986 | July 31, 1888 | Electric Insulator Peg Pin (wooden) tapered below threads & to have metal rod inserted, too |
JOSLIN, William E. |
Pin | |
| 1890 | ||||||
U  |
436,120 | September 9, 1890 | Insulator Bracket Bracket of metal with split threads |
CHUBBUCK, H. Eugene |
Bracket | |
| 1893 | ||||||
| U | 505,123 | September 19, 1893 | Insulator Pin Pin (wooden) strengthened by metal rod |
O'NEILL, James J. |
Pin | |
| 1894 | ||||||
| U | 527,318 | October 9, 1894 | Insulator Pin Pin, wooden with internal reinforcing metal bar |
BULLOCK, Edward J. |
Pin | 1/2 to Merwin Tuttle |
| 1915 | ||||||
| U | 1,157,037 | October 19, 1915 | Insulator Supporting Structure Bracket stamped from sheet metal and curved upward with spring for threads |
PEIRCE, JR., Charles L. |
Bracket | 1/2 to Hubbard & Co. |
| 1916 | ||||||
| U | 1,195,263 | August 22, 1916 | Insulator Support Bracket, sheet metal stamped in U-bracket with attached threads |
PEIRCE, JR., Charles L. |
Bracket | 1/2 to Hubbard & Co. |
| 1924 | ||||||
| U | 1,520,218 | December 23, 1924 | Insulator Bracket Bracket made of stamped metal |
BARNARD, Thomas A. |
Bracket | |
| 1936 | ||||||
| U | 2,032,017 | February 25, 1936 | Sheet Metal Insulator Support Pin and Method of Making the Same Steel sheet metal pin easily manufactured |
HOCHER, Andrew A. LASHER, Marshall |
Pin | Hubbard and Co. |
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