Patent
   D448472
Priority
Feb 17 1999
Filed
Feb 17 1999
Issued
Sep 25 2001
Expiry
Sep 25 2015
Assg.orig
Entity
unknown
22
12
n/a
The ornamental design for a respiratory mask, as shown and described.

FIG. 1 is a perspective view showing the new design for a respiratory mask design.

FIG. 2 is a front view thereof.

FIG. 3 is a top elevational view thereof.

FIG. 4 is a bottom elevational view thereof.

FIG. 5 is a rear elevational view; and,

FIG. 6 is a side elevational view. The left side elevational view is the same as the right side elevational view.

The broken lines showing in FIGS. 1-6 are for illustrative purposes only and forms no part of the claimed design.

Chen, Daniel T.

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Patent Priority Assignee Title
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Feb 17 19993M Innovative Properties Company(assignment on the face of the patent)
Feb 17 1999CHEN DANIEL T Minnesota Mining and Manufacturing CompanyASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0097830212 pdf
Mar 05 2001MINNESOTA MINING AND MANUFACTURING COMPANY, A CORPORATION OF THE STATE OF DELAWARE3M Innovative Properties CompanyASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0113760012 pdf
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