| SELECT DISTINCT patent.*, YEAR(date) as year FROM patent LEFT JOIN name ON name.patent = patent.patent AND name.type = patent.type LEFT JOIN category ON category.patent = patent.patent AND category.type = patent.type WHERE (category.class = '30') ORDER BY last_name ASC, first_name, date, patent, type |
Total of 4 patents found where: Class is '30';
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 |
| BETTINI, David Joseph | ||||||
| U | 2,341,309 | February 8, 1944 | Cutting Tool Cutting tool to remove clay from inside a bushing |
BETTINI, David Joseph |
Cutting Tool | Locke Insulator Corp. |
| GOODHOLM, George H. TRAIN, Jacob A. | ||||||
U  |
870,951 | November 12, 1907 | Tool Cutting tool to shorten porcelain tubes |
GOODHOLM, George H. TRAIN, Jacob A. |
Tool | |
| GOULD, William P. | ||||||
| U | 433,284 | July 29, 1890 | Non-Conductive and Ornamental Handle for Vessels, $c. Composition handle for tea pots, knives, door knobs, and electrical switches |
GOULD, William P. |
Composition | |
| REYNOLDS, David M. | ||||||
| U | 183,865 | October 31, 1876 | Improvement in Telegraph Insulators Slotted glass pin to hold wire and cap screwed to secure wire |
REYNOLDS, David M. |
Slotted | James M. Brookfield |
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