| 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 |