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} |
523 | DF | .~ Including application of internal fluid pressure to hollow finite length parison to expand same into conformity with female mold part {10} |
527 | .~.~ Forming multiple containers in a single mold block from a single length of parison |