US PATENT SUBCLASS 439 / 537
.~.~ For ceiling box

Current as of: June, 1999
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439 /   HD   ELECTRICAL CONNECTORS

527  DF  WITH SUPPORTING MEANS FOR COUPLING PART {18}
536  DF  .~ Supporting means comprising face plate or closure member for outlet box {1}
537.~.~ For ceiling box

DEFINITION

Classification: 439/537

For ceiling box:

(under subclass 536) Coupling part wherein the holding or retaining means is intended to be used in conjunction with an encasing container in the overhead, horizontal portion of a room to pride access to the outlet from beneath the horizontal portion.