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United States Patent D310,431
Bellm September 4, 1990

Gas delivery mask


The ornamental design for a gas delivery mask, as shown and described.
Inventors: Bellm; Howard G. (The Priory, GB3)
Assignee: Lifeline Limited (Vale, GB1)
Appl. No.: 07/077,180
Filed: July 24, 1987

Foreign Application Priority Data

Jan 30, 1987 [GB] 1039627

Current U.S. Class: D24/110.4 ; D24/110.1
Field of Search: D29/7-10,12,15-18 128/205.25,206.12,206.15,206.17,206.19,206.21,206.28,207.17

References Cited

U.S. Patent Documents
D168311 December 1952 Lewis
D250131 October 1978 Lewis et al.
D262322 December 1981 Mizerak
D294410 February 1988 Montesi
4723542 February 1988 Giffard
Primary Examiner: Word; A. Hugo
Assistant Examiner: McInroy; Ruth
Attorney, Agent or Firm: Fliesler, Dubb Meyer & Lovejoy


FIG. 1 is a top, front and left side perspective view of a gas delivery mask showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and

FIG. 6 is a rear elevational view thereof.

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