Patent
   D255783
Priority
Dec 21 1977
Filed
Dec 21 1977
Issued
Jul 08 1980
Expiry
Jul 08 1994
Assg.orig
Entity
unknown
1
4
n/a
The ornamental design for a letter bomb detector, as shown and described.

FIG. 1 is a top and right front perspective view of a letter bomb detector showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof.

Hays, Ronald B.

Patent Priority Assignee Title
D285485, Nov 25 1983 CAMBRIDGE INSTRUMENTS INC , A DE CORP Refractometer
Patent Priority Assignee Title
3893022,
193480,
203623,
232657,
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