US PATENT SUBCLASS 53 / 262
.~.~.~ Spring form

Current as of: June, 1999
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53 /   HD   PACKAGE MAKING

235  DF  DEPOSITING ARTICLES AND ARRANGING MATERIAL IN PREFORMED RECEPTACLES {10}
255  DF  .~ Guide or inserted form or support for article contents {6}
261  DF  .~.~ Expansible {1}
262.~.~.~ Spring form

DEFINITION

Classification: 53/262

(under subclass 261) Apparatus in which the guide or form comprises an element or elements made of elastic material which exert a return pressure when bent out of their normal rest position.