Patent
   D359251
Priority
Sep 28 1994
Filed
Sep 28 1994
Issued
Jun 13 1995
Expiry
Jun 13 2009
Assg.orig
Entity
unknown
3
4
n/a
The ornamental design for a portable door knob alarm, as shown and described.

FIG. 1 is a perspective view of a portable door knob alarm showing my new design, with the broken lines showing for illustrative purposes only and forming no part of the claimed design;

FIG. 2 is a front view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a top plan view thereof.

Tallent, Allan

Patent Priority Assignee Title
6154130, Dec 09 1997 Portable room security system
8912903, Nov 06 2012 Door knob security alarm
D430500, Dec 13 1999 Door alarm
Patent Priority Assignee Title
D305508, Jul 15 1986 Audible window and door intrusion alarm
D311349, Jul 21 1988 W W B A INCORPORATED Combined personal alarm and key ring
D336054, Dec 13 1991 Burglar alarm
D337960, Jan 29 1991 John Manufacturing Limited Portable burglar alarm
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