Manual control valve for anesthetic gases

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Description

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.

Referenced Cited
U.S. Patent Documents
D234637 March 1975 Flynn
3521626 July 1970 Hashimoto et al.
3575206 April 1971 Ulmann
3688794 September 1972 Bird et al.
Patent History
Patent number: D248170
Type: Grant
Filed: Dec 1, 1976
Date of Patent: Jun 13, 1978
Inventor: Allan M. Steigerwald (Port Angeles, WA)
Primary Examiner: Bernard Ansher
Attorney: Francis L. Swanson
Application Number: 5/746,621
Classifications
Current U.S. Class: D29/7; D23/19
International Classification: D2902; D2999;