Heat exchange inhalation mask
US D203912 S
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Description (OCR text may contain errors)
United States Patent 0 Des. 203,912 Cfi Patented Feb. 22, 1966 HEAT EXCHANGE INHALATION MASK Armand De Angelis, Southbridge, Mass., assignor to Omnitech Iuc., Dudley, Mass., a corporation of Massachusetts Filed May 26, 1965, Ser. No. 85,465
Term of patent 14 years (Cl. D83-1) FIG. 1 is a front perspective view of a heat exchange inhalation mask showing my new design;
FIG. 2 is a side elevational view;
FIG. 3 is a front view;
FIG. 4 is a sectional view taken on the line 4-4 of FIG. 3; and
FIG. 5 is a sectional view taken on the line 5-5 of FIG. 3.
The broken lines are shown for illustrative purposes only.
The ornamental design for a heat exchange inhalation mask, substantially as shown and described.
References Cited by the Examiner UNITED STATES PATENTS D. 189,009 10/ 1960 Muller D831 314,485 3/1885 Spencer. 3,014,479 12/ 1961 Matheson.
OTHER REFERENCES Wilson Industrial Safety Catalog. 1959, page 31, item Number 34, Helmet.
Wilson Industrial Safety Catalog, 1959, page 50, item Number 55, Nuisance Dust Respirator.
A. HUGO WORD, Primary Examiner. WALLACE R. BURKE, Examiner.