Patent
   D290290
Priority
Sep 21 1984
Filed
Sep 21 1984
Issued
Jun 09 1987
Expiry
Jun 09 2001
Assg.orig
Entity
unknown
2
5
n/a
The ornamental design for a clean room entry-exit system, as shown.

FIG. 1 is a perspective view of a clean room entry-exit system showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a right side elevation view thereof; and

FIG. 7 is a rear elevation view thereof.

Jones, Jr., Robert E.

Patent Priority Assignee Title
D295567, Apr 01 1985 Shuttleworth, Inc. Combined air filteration housing and conveyor unit
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DE1122296,
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