U.S. patent number D286,213 [Application Number 06/493,649] was granted by the patent office on 1986-10-14 for dual filter respirator.
Invention is credited to Richard D. Maryyanek, Joseph Z. Zdrok.
United States Patent |
D286,213 |
Maryyanek , et al. |
October 14, 1986 |
Dual filter respirator
Claims
The original design for a dual filter respirator, as shown and
described.
Inventors: |
Maryyanek; Richard D.
(Northbridge, MA), Zdrok; Joseph Z. (Webster, MA) |
Appl.
No.: |
06/493,649 |
Filed: |
May 11, 1983 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
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439948 |
Nov 8, 1982 |
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Current U.S.
Class: |
D24/110.1 |
Field of
Search: |
;D29/6-9
;128/206.17,207.12,206.15 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Other References
New Equipment Digest (vol. 48, No. 2, Feb. 1983) Scientific Library
Call No. TA/401/.N45 (p. 88: Lightweight Respirator)..
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Primary Examiner: Burke; Wallace R.
Assistant Examiner: Vinson; Brian N.
Attorney, Agent or Firm: Pahl, Lorusso & Loud
Description
FIG. 1 is a front elevational view of the dual filter respirator
embodying our new design;
FIG. 2 is a rear perspective view thereof;
FIG. 3 is a side view thereof, the opposite side being of
substantially the same appearance;
FIG. 4 is a top plan view thereof; and
FIG. 5 is a bottom plan view thereof.
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