US PATENT SUBCLASS 348 / 821
.~.~.~ Implosion protection

Current as of: June, 1999
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348 /   HD   TELEVISION

739  DF  VIDEO DISPLAY {13}
805  DF  .~ Cathode-ray tube {5}
818  DF  .~.~ Protective device {3}
821.~.~.~ Implosion protection {2}
822  DF  .~.~.~.~> Tensioned band
823  DF  .~.~.~.~> Protective glass or panel {1}

DEFINITION

Classification: 348/821

Implosion protection:

(under subclass 818) Subject matter wherein the protective structure is intended to prevent viewer injury from an inward bursting of the cathode-ray tube.

SEE OR SEARCH CLASS

220, Receptacles,

2.1, and 2.3 for a tube envelope intended to be used for a television tube.

313, Electric Lamp and Discharge Devices,

477, for cathode-ray tube envelope.