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| Number | Title | Issue Date |
| 5389761 | Method and apparatus for cleaning metal pieces prior to resistive seam welding or laser lap seam welding An apparatus comprises a current source, first and second wheels through which a current from the current source selectively flows, and a source of gas, wherein the first and second wheels receive first and second pieces of metal having overlapping portio... | 02/14/1995 |
| 5377398 | Method for descaling metal strip utilizing anhydrous salt An improved salt and method of using such salt for conditioning scale on strip or sheet metal surfaces is provided. In more particular aspects, the invention provides an improved salt of alkali metal hydroxides and alkali metal nitrates which are used in ... | 01/03/1995 |
| 5272798 | Method and apparatus for descaling metal strip A system for descaling a strip of metal includes a nozzle assembly mounted within a spray box for spraying descaling product on the strip. The nozzle assembly includes a spray chamber; nozzles mounted directly to the spray chamber; and a heater for heatin... | 12/28/1993 |
| 4088926 | Plasma cleaning device Apparatus for cleaning contaminated surfaces such as hydro-carbon contaminant films in high vacuum environments including a plasma discharge housing for allowing a plasma to be generated in an environment having a higher pressure than the surface which is... | 05/09/1978 |
