Multiple module serial link encryption unit or similar article

- Motorola Inc.

FIG. 1 is a perspective view of a multiple module serial link encryption unit or similar article showing our new design;

FIG. 2 is a perspective view thereof with _the hinged keypad in the open position, the keys are shown in broken lines in FIG. 2 for illustrative purposes only;

FIG. 3 is a top view of the unit of FIG. 1; and

FIG. 4 is a side view of the unit of FIG. 1.

Referenced Cited
U.S. Patent Documents
3289047 November 1966 Pick
Other references
  • Beckman Short Form Electronic Instrument Specifying Guide 1966, p. 17, Model 3926 Programmer. Mits Technical Information, 1977, Altair# 8800b Turnkey Model Housing. Electronic Design, 3-29-76, p. 51, Nova.RTM. Computer Housing. Electronics, 12-11-1975, p. 122, Dana Timer/Counter.
Patent History
Patent number: D263395
Type: Grant
Filed: Apr 2, 1979
Date of Patent: Mar 16, 1982
Assignee: Motorola Inc. (Schaumburg, IL)
Inventors: Joseph W. Karas (Phoenix, AZ), Robert F. Pfeifer (Phoenix, AZ), Robert Samson (Scottsdale, AZ)
Primary Examiner: Susan J. Lucas
Attorneys: M. David Shapiro, Eugene A. Parsons
Application Number: 6/25,956
Current U.S. Class: D14/100; D13/41
International Classification: D1402; D1303;