Patent
   D260741
Priority
Jun 25 1979
Filed
Jun 25 1979
Issued
Sep 15 1981
Expiry
Sep 15 1995
Assg.orig
Entity
unknown
12
4
n/a
The ornamental design for a portable door alarm, as shown.

FIG. 1 is a front perspective view from above and one side of a portable door alarm showing my new design;

FIG. 2 is a view of the opposite side thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a bottom view thereof; and

FIG. 5 is a front perspective view thereof with the supporting hook in an extended position.

Lam, Yanta H. T.

Patent Priority Assignee Title
6104288, Mar 11 1999 Door mounted audio reminder
6154130, Dec 09 1997 Portable room security system
D272993, Dec 30 1981 Mattel, Inc. Portable cabinet door alarm
D274415, Feb 02 1982 Mattel, Inc. Portable smoke detector or similar article
D275376, Apr 19 1982 Cable Electric Products, Inc. Burglar and smoke travel alarm
D291975, Jan 11 1985 Alarm
D308347, Dec 22 1986 BRYTECH INC Ultrasonic object detection device
D331204, Oct 31 1989 Bellman & Symfon AB Portable telephone auxiliary tone ringer and door alarm
D337960, Jan 29 1991 John Manufacturing Limited Portable burglar alarm
D708086, Feb 01 2013 Ningbo Yinzhou Self Photoelectron Technology Co. Siren box
D708087, Feb 01 2013 NINGBO VASA INTELLIGENT TECHNOLOGY CO , LTD Siren box
D977353, Apr 01 2016 WAGNER Group GmbH Fire detection device with part
Patent Priority Assignee Title
3643249,
3732843,
3878539,
240410,
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Jun 25 1979Meyer Aluminium Limited(assignment on the face of the patent)
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