US PATENT SUBCLASS 5 / 643
.~.~ With rigid frame or base, or rigidifying or reinforcing means

Current as of: June, 1999
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5 /   HD   BEDS

630  DF  SUPPORT MEANS FOR DISCRETE PORTION OF USER, USEABLE WITH BED OR SURGICAL SUPPORT {5}
636  DF  .~ For head or neck (e.g., pillow) {9}
643.~.~ With rigid frame or base, or rigidifying or reinforcing means

DEFINITION

Classification: 5/643

With rigid frame or base, or rigidifying or reinforcing means:

(under subclass 636) Subject matter wherein the head or neck support includes an inflexible frame or base means for the supporting surface or an element or means adapted to rigidify or reinforce the device.