Industrial dust control door

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Description

FIG. 1 is a top perspective view of my present design, an industrial dust control door.

FIG. 2 is a bottom perspective view thereof; and,

FIG. 3 is a cross-sectional view taken along lines 3—3 of FIG. 2.

Claims

The ornamental design for a industrial dust control door, as shown and described.

Referenced Cited
U.S. Patent Documents
4658544 April 21, 1987 McCarty
4662114 May 5, 1987 Suttles
D422088 March 28, 2000 Mishina
Patent History
Patent number: D475796
Type: Grant
Filed: May 28, 2002
Date of Patent: Jun 10, 2003
Inventor: David Liu (Hamilton, Ontario)
Primary Examiner: Doris Clark
Application Number: 29/161,228
Classifications
Current U.S. Class: D25/48
International Classification: 2502;