264 / | HD | PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES |
500 | DF | DIRECT APPLICATION OF FLUID PRESSURE DIFFERENTIAL TO PERMANENTLY SHAPE, DISTORT, OR SUSTAIN WORK {14} |
544 | DF | .~ Starting material is nonhollow planar finite length preform or product is finite length {6} |
547 | DF | .~.~ With distinct staged deformation by differential fluid pressure {2} |
548 | ![]() | .~.~.~ Including heating after forcing into contact with a solid heating means by differential fluid pressure |