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Patent
   D289754
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
16
References
6
Maint.:
n/a
The ornamental design for an intercom door answering unit, as shown.

FIG. 1 is a top perspective view of an intercom door answering 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
D379355, Nov 21 1995 MOTOROLA SOLUTIONS, INC Speaker front panel
D394653, Dec 27 1996 Aiphone Co., Ltd. Intercom sub-station
D394656, Dec 25 1996 Aiphone Co., Ltd. Intercom master station
D426220, Feb 08 1999 KINGS III OF AMERICA, INC , NORTH AMERICA Handsfree emergency telephone
D438186, Feb 20 1998 TRAFFIC TECHNOLOGIES SIGNAL & HARDWARE DIVISION PTY LTD Telephone
D478325, Feb 07 2002 Novar GmbH Manual call point
D480377, Feb 27 2002 Aiphone Co., Ltd. Interphone
D480702, Feb 27 2002 Aiphone Co., Ltd. Interphone
D490396, Sep 13 2002 Aiphone Co., Ltd. Interphone
D513744, Aug 07 2003 PHC HOLDINGS CORPORATION Recording unit of entrance television phone system
D553607, Feb 14 2006 Aiphone Co., Ltd. Interphone
D666988, Mar 07 2008 S. Siedle & Soehne, Telefon—und Telegrafenwerke Ohg Communication device
D800087, Sep 11 2015 TALK-A-PHONE LLC Compact call station
D817299, Sep 11 2015 TALK-A-PHONE LLC Call station
D834555, Sep 11 2015 TALK-A-PHONE LLC Compact call station
D834556, Sep 11 2015 TALK-A-PHONE LLC Compact call station
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
3453390,
4518826, Dec 22 1982 Mountain Systems, Inc. Vandal-proof communication system
4584436, Apr 27 1984 Claiborne Electronics, Inc. Door-mounted combination intercom and viewer
D279471, Feb 09 1983 Nippon Tsushin Kogyo Kabushiki Kaisha Electronic intercommunication unit
D282360, Nov 30 1982 Sharp Corporation Intercommunication unit
D283130, Nov 30 1983 Claiborne Electronics, Inc. Combined door viewer and two-way intercom unit
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 0042720418 pdf
Jun 11 1984Electron Corporation (Aust.) Pty. Ltd.(assignment on the face of the patent)
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