| 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 = '74') ORDER BY date ASC, patent, type |
Total of 6 patents found where: Class is '74';
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 |
| 1888 | ||||||
| U | 391,512 | October 23, 1888 | Electric Switch Wooden switch (Brown p. 21) |
CLEVELAND, William B. |
Wood | |
| 1892 | ||||||
| U | 470,514 | March 8, 1892 | Lightning Conductor Hollow conductor rod with slip fittings |
SIMPSON, Harvey |
Lightning Rod | |
| U | 474,319 | May 3, 1892 | Insulator Strain type |
GOODRICH, Charles F. |
Strain | 1/2 to John G. Thompson |
| 1906 | ||||||
| U | 809,969 | January 16, 1906 | Glass-Molding Apparatus Glass press for jars or insulators |
MYERS, McClelland |
Press | |
| 1917 | ||||||
| U | 1,222,255 | April 10, 1917 | Standard Fence Stay Anchor Rod and Lightning Rod Lightning rod for barbed wire fence |
ALVERSON, Lewis |
Lightning Rod Fence | |
| 1923 | ||||||
| U | 1,446,067 | February 20, 1923 | Method of Connecting Insulator Units Suspension, method of cementing pin |
REAGAN, Frank H. |
Suspension | Locke Insulator Corp. |
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