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The ornamental design for a respiratory mask, as shown and described. |
FIG. 1 is a perspective view of a respiratory mask showing our new design, the broken lines of values and straps are for illustrative purposes only and form no part of the claimed design;
FIG. 2 is a side elevational view thereof, the opposite side elevational view being a mirror image of that shown;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a top plan view thereof, the bottom plan view being a mirror image of that shown; and
FIG. 5 is a rear elevational view thereof.
Rudolph, Kevin A., Zavala, Donald C.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
May 04 1987 | RUDOLPH, KEVIN A | HANS RUDOLPH, INC , A CORP OF MISSOURI | ASSIGNMENT OF ASSIGNORS INTEREST | 004711 | /0540 | |
May 04 1987 | ZAVALA, DONALD C | HANS RUDOLPH, INC , A CORP OF MISSOURI | ASSIGNMENT OF ASSIGNORS INTEREST | 004711 | /0540 | |
May 18 1987 | Hans Rudolph, Inc. | (assignment on the face of the patent) | / |
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