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| Number | Title | Issue Date |
| 4722295 | Article treating apparatus There is disclosed an article treating apparatus particularly apparatus for pressure-impregnating or vacuum impregnating porous articles such as metal castings. A holder for the articles or a metal basket containing them is disposed in an autoclave and ca... | 02/02/1988 |
| 4620991 | Apparatus for the impregnation of porous articles A pressure vessel for use in impregnating porous articles comprising a support member for the articles, slidable between an upper position for degassing the articles and a lower position for impregnating the articles, a release mechanism operable from out... | 11/04/1986 |
| 4147821 | Impregnation of porous articles This invention relates to the impregnation of rigid porous articles, particularly metal castings. In its preferred form the impregnant is a liquid mixture of monofunctional (meth)acrylic ester and a relatively small proportion of polyfunctional (meth)acry... | 04/03/1979 |
