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The ornamental design for a manual control valve for anesthetic gases, as shown and described. |
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FIG. 1 is a side elevation showing the left side of my design, which elevation is a mirror image of the right side.
FIG. 2 is a plan view of the top of my design.
FIG. 3 is an elevation showing the front of my design.
FIG. 4 is an elevation showing the rear of my design.
FIG. 5 is a plan view of the bottom of my design.
FIG. 6 is a perspective view showing the top, front and left side of my design.
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