TREA

Personal respiratory protection device having an exhalation valve

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Information

  • Patent Grant
  • D431647
  • Patent Number
    D431,647
  • Date Filed
    Friday, September 6, 1996
    27 years ago
  • Date Issued
    Tuesday, October 3, 2000
    23 years ago
  • US Classifications
    Field of Search
    • US
    • D24 1101
    • D24 1106
    • 128 20619
    • 128 20612
    • 128 20716
    • 128 20712
    • 128 20615
    • 128 20617
  • International Classifications
    • 2902
    • Term of Grant
      14Years
Information
Abstract
Description
Claims
  • The ornamental design for a personal respiratory protection device having an exhalation valve, as shown and described.
US Referenced Citations (26)
Number Name Date Kind
RE24549 Haliczer Oct 1958
D249279 Backlund Sep 1978
D326541 McBrearty, Jr. May 1992
D347298 Japuntich et al. May 1994
D347299 Bryant et al. May 1994
D380545 Nozaki et al. Jul 1997
D389239 Scholey Jan 1998
1987922 Blatt Jan 1935
2012505 Goldsmith Aug 1935
2029947 Schmitt et al. Feb 1936
2565124 Durborow Aug 1951
2634725 Presti Apr 1953
2752916 Haliczer Jul 1956
3288138 Sachs Nov 1966
3971369 Aspelin et al. Jul 1976
4248220 White Feb 1981
4417575 Hilton et al. Nov 1983
4628927 Wart Dec 1986
4643182 Klein Feb 1987
4827924 Japuntich May 1989
4873972 Magidson et al. Oct 1989
4941470 Hubbard et al. Jul 1990
4951664 Niemeyer Aug 1990
5035006 Hetz et al. Jul 1991
5322061 Brunson Jun 1994
5673690 Tayebi et al. Oct 1997
Foreign Referenced Citations (1)
Number Date Country
2 103 491 Feb 1983 GBX
Non-Patent Literature Citations (2)
Entry
Racal Health & Safety Product Literature for "Delta.TM. Disposable Respirators" (1993).
Glendale Optical Company Product Literature for "Glendale Respiratory Protection" (Feb. 1983).