COLOR-SOUND TELEVISION DEVICE Russian patent published in 2005 - IPC

Abstract RU 2257683 C1

FIELD: electric engineering.

SUBSTANCE: device is provided with additional block for training and teaching by test cards with colored letters and symbols applied thereto.

EFFECT: higher efficiency, broader functional capabilities, higher personnel safety.

7 cl, 45 dwg

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RU 2 257 683 C1

Authors

Grigorchuk V.S.

Dates

2005-07-27Published

2003-11-03Filed