US PATENT SUBCLASS 380 / 52
.~ Including particular structure or housing (e.g., display, keyboard)

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


380 /   HD   CRYPTOGRAPHY

9  DF  ELECTRIC SIGNAL MODIFICATION (E.G., SCRAMBLING) {18}
52.~ Including particular structure or housing (e.g., display, keyboard) {1}
53  DF  .~.~> Audio transducer mounting or structure

DEFINITION

Classification: 380/52

Including particular structure or housing (e.g., display, keyboard):

(under subclass 9) Subject matter which includes a detail of the configuration or arrangement of the cryptos:graphic equipment of communications equipment connected thereto.

(1) Note. Such equipment may include an enclosure, keyboard display, etc.

SEE OR SEARCH CLASS

341, Coded Data Generation or Conversion,

22+, for a keyboard controlled noncryptos:graphic encoding circuit.