TREA

Breathing gas mask

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Information

  • Patent Grant
  • D271144
  • Patent Number
    D271,144
  • Date Filed
    Monday, July 6, 1981
    43 years ago
  • Date Issued
    Tuesday, October 25, 1983
    41 years ago
  • Inventors
  • Original Assignees
  • Examiners
    • Burke; Wallace R.
    • Fay, Jr.; Horace B.
    Agents
    • Bethel; George F.
    • Bethel; Patience K.
Information
Abstract
Description
Claims
  • The ornamental design for a breathing gas mask, as substantially shown.
US Referenced Citations (10)
Number Name Date Kind
D137197 DuBois Feb 1944
D193048 Schwartz Jun 1962
D220304 Wolfe Mar 1971
D249368 Watkins, Jr. Sep 1978
2835250 Austin May 1958
2898908 Sovinsky Aug 1959
3259127 Klinger et al. Jul 1966
3343535 Lytle et al. Sep 1967
3550588 Stahl Dec 1970
3968793 Geissler Jul 1976
Foreign Referenced Citations (1)
Number Date Country
650869 Sep 1937 DE2