TREA

Dual filter respirator

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Information

  • Patent Grant
  • D286213
  • Patent Number
    D286,213
  • Date Filed
    Wednesday, May 11, 1983
    41 years ago
  • Date Issued
    Tuesday, October 14, 1986
    38 years ago
Information
Abstract
Description
Claims
  • The original design for a dual filter respirator, as shown and described.
US Referenced Citations (3)
Number Name Date Kind
D271246 Matheson et al. Nov 1983
2664887 Green Jan 1954
4373520 Arbiqne Feb 1983
Foreign Referenced Citations (1)
Number Date Country
460003 May 1928 DE2
Non-Patent Literature Citations (1)
Entry
New Equipment Digest (vol. 48, No. 2, Feb. 1983) Scientific Library Call No. TA/401/.N45 (p. 88: Lightweight Respirator).
Continuation in Parts (1)
Number Date Country
Parent 439948 Nov 1982