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The ornamental design for a hinged boom arm for a microphone headset, substantially as shown and described. |
FIG. 1 is a front elevation of a hinged boom arm for a microphone headset, showing my new design, with a typical headset to which it is adapted for connection shown in phantom line;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a side elevational view thereof;
FIG. 4 is an elevation thereof from the side opposite that shown in FIG. 3;
FIG. 5 is a top plan view thereof; and
FIG. 6 is a bottom plan view thereof.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Aug 24 1979 | Racal Acoustics Limited | (assignment on the face of the patent) | / |
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