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Patent
D271432
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Priority
Jun 24 1981
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Filed
Jun 24 1981
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Issued
Nov 15 1983
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Expiry
Nov 15 1997
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Assg.orig
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Entity
unknown
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10
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6
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n/a
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The ornamental design for a dust filtering respirator, as shown and described.
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FIG. 1 is a front view of our dust filtering respirator;
FIG. 2 is a rear view; and
FIG. 3 is a vertical cross section on the line 3--3 of FIG. 2.
Liao, Sheng-Chung, Neidhart, John W.
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| Date |
Maintenance Fee Events |
n/a
| Date |
Maintenance Schedule |
n/a