| 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 = '174') AND (category.subclass = '71R') ORDER BY date ASC, patent, type |
Total of 2 patents found where: Class is '174'; Subclass is '71R';
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| T / S | Patent | Date | Description | Patentee | Category | Assigned To |
| 1877 | ||||||
| U | 186,503 | January 23, 1877 | Improvement in Lightning Rod Connector Clips Coupling or connector clip composed of flat metal bent around the adjoining rod with external threads formed on the end so the rod can be screwed onto the clip |
SHOOK, Albert |
Lightning Rod Coupling | |
| 1913 | ||||||
| U | 1,070,948 | August 19, 1913 | Cable and Tube Coupling Lightning rod coupling formed from sheet metal with flaps that fold over the conductor |
DODD, Thomas W. |
Lightning Rod Coupling | |
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