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Patent
   D289758
Priority
Feb 23 1984
Filed
Jun 11 1984
Issued
May 12 1987
Expiry
May 12 2001
Inventors
Koob, Gunt…
Assg.orig
ELECTRON C…
Assg.curr
Electron C…
Entity
unknown
Referenced by
2
References
7
Maint.:
n/a
The ornamental design for an intercom master control unit.

FIG. 1 is a top perspective view of an intercom master control unit showing my new design; and

FIG. 2 is a bottom perspective view thereof.
INVENTORS:

Koob, Gunter H.

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
D480377, Feb 27 2002 Aiphone Co., Ltd. Interphone
D480702, Feb 27 2002 Aiphone Co., Ltd. Interphone
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
4019139, Apr 28 1975 Yokogawa Electric Corporation Interaction multi-station alarm system
D244877,
D269780, Apr 02 1979 U.S. Philips Corporation Intercom speaker and receiver
D274518, Sep 04 1981 U.S. Philips Corporation Intercommunication apparatus
D278054, Oct 02 1981 Telefonaktiebolaget LM Ericsson Combined intercom and stand therefor
D281500, Nov 30 1982 Sharp Corporation Interphone
D281501, Nov 30 1982 Sharp Corporation Interphone
ASSIGNMENT RECORDS    Assignment records on the USPTO
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Executed onAssignorAssigneeConveyanceFrameReelDoc
May 10 1984KOOB, GUNTER H ELECTRON CORPORATION AUST PTY LTD 1905 MALVERN ROAD, EAST MALVERN, VICTORIA 3145 AUSTRALIAASSIGNMENT OF ASSIGNORS INTEREST 0042850189 pdf
Jun 11 1984Electron Corporation (Aust.) Pty. Ltd.(assignment on the face of the patent)
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