Encrypted data transmission system employing means for randomly altering the encryption keys | Patent Number 05412730
US 05412730 NAFilled DateApr 23, 1992
Priority DateOct 6, 1989
Publication Date-
Expiration DateOct 6, 2009
Inventor/Applicants Michael F. Jones
ExaminesZECHER, CORDELIA P K
Art Unit2431
Technology Center2400
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