US PATENT SUBCLASS 248 / 223.21
.~.~.~.~ Aperture having multiple extending slots

Current as of: June, 1999
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248 /   HD   SUPPORTS

200  DF  BRACKETS {11}
205.1  DF  .~ Specially mounted or attached {22}
220.21  DF  .~.~ Interlocked bracket and support {15}
222.41  DF  .~.~.~ Keyhole aperture {1}
223.21.~.~.~.~ Aperture having multiple extending slots

DEFINITION

Classification: 248/223.21

Aperture having multiple extending slots:

(under subclass 222.41) Keyhole aperture comprising (a) two narrow grooves extending from an opening or (b) two narrow recesses each communicating with a separate opening.