| 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 = '333') AND (category.subclass = '236') ORDER BY date ASC, patent, type |
Total of 3 patents found where: Class is '333'; Subclass is '236';
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 |
| 1928 | ||||||
| U | 1,687,535 | October 16, 1928 | Reduction of Losses in Insulators, Pins, and Cross Arms Carrier circuit insulator with specific diameter/pin ratio |
AFFEL, Herman A. GREEN, Estill I. |
Carrier | American Telephone & Telegraph Co. |
| U | 1,687,556 | October 16, 1928 | Reduction of Attenuation Due to the Conductance Losses in Cross Arms and Insulator Pins CD 122.4; Metal thread thimble for wooden pins carrier circuits connected electrically to other pins or brackets on the same crossarm to reduce leakage losses |
GORDON, Chester S. LOWE, James T. |
Pin | American Telephone & Telegraph Co. |
| 1929 | ||||||
| U | 1,710,756 | April 30, 1929 | Reduction of Attenuation Due to the Conductance Losses in Cross Arms and Insulator Pins Reducing leakage on carrier circuits |
WILSON, Leon T. |
Carrier | American Telephone & Telegraph Co. |
Total of 0.00 seconds