| SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN name ON name.patent = patent.patent AND name.type = patent.type WHERE (last_name = 'BOYNTON') AND (first_name = 'John F.') ORDER BY date ASC, patent, type |
Total of 3 patents found where: Last Name is 'BOYNTON'; First Name is 'John F.';
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| T / S | Patent | Date | Description | Patentee | Category | Assigned To |
| 1867 | ||||||
| U | 61,390 | January 22, 1867 | Improved Compound for Telegraph Insulators, and for Other Purposes Heating earthenware insulators to 400-500 degrees and dipping into asphaltic compound that has been mixed with sulfur, silicic acid, and silicate of alumina to provide a hard, weather-resistant coating |
BOYNTON, John F. |
Coating | |
| U | 66,453 | July 9, 1867 | Improvement in Insulators for Telegraphs Earthenware pin and insulator saturated with tar |
BOYNTON, John F. |
Earthenware | |
| 1869 | ||||||
| U | 96,194 | October 26, 1869 | Improvement in Lightning Rod Points Lightning rod point struck from a sheet of metal and having multiple corrugations |
BOYNTON, John F. |
Lightning Rod Point | |
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