| 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 = '217.4') ORDER BY date ASC, patent, type |
Total of 5 patents found where: Class is '248'; Subclass is '217.4';
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| T / S | Patent | Date | Description | Patentee | Category | Assigned To |
| 1916 | ||||||
| U | 1,201,295 | October 17, 1916 | Insulator Support Pin, cast metal with lag screw |
HENDEE, Lem E. |
Pin | |
| 1921 | ||||||
| U | 1,385,638 | July 26, 1921 | Supporting Bracket Steel pin with lag screw and spring for threads |
MILLER, Charles E. |
Pin | |
| 1926 | ||||||
| U | 1,575,484 | March 2, 1926 | Insulator Bracket Bracket with lag screw for wireholder knob |
HOENIG, Harry E. |
Bracket | |
| U | 1,591,883 | July 6, 1926 | Insulator Pin Steel pin with lag screw and spring for threads |
PEIRCE, JR., Charles L. |
Pin | |
| 1951 | ||||||
| U | 2,571,495 | October 16, 1951 | Adjustable Insulator Bracket Wireholder bracket for secondary rack insulators that also functions to aid in stringing the wire without damage to the bracket. |
STEINMAYER, Alwin G. |
Wireholder/bracket/rack Spool | McGraw Electric Co. |
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