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| Number | Title | Issue Date |
| 4349427 | Aluminum reduction cell electrode The invention is directed to cathode modules comprised of refractory hard metal materials, such as TiB2, for an electrolytic cell for the reduction of alumina wherein the modules may be installed and replaced during operation of the cell and wh... | 09/14/1982 |
| 4134517 | Easy open end Improved depressible tab provided with a nose for easy open end closure members and the like, wherein an improved pressure relief means in the form of a unique vent arrangement is incorporated in the nose portion of the depressible tab.... | 01/16/1979 |
| 4035903 | Method of manufacturing a sacrificial anode rod assembly The invention provides a novel method of manufacturing a sacrificial anode rod assembly for cathodically protecting the internal surfaces of ferrous metal water-containing vessels, such as water heater tanks, which method provides an elongated anode rod m... | 07/19/1977 |
