Dual filter respirator
Maryyanek , et al. October 14, 1
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
| Application Number | Filing Date | Patent Number | Issue Date | ||
|---|---|---|---|---|---|
| 439948 | Nov 8, 1982 | ||||
| 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
| D271246 | November 1983 | Matheson et al. |
| 2664887 | January 1954 | Green |
| 4373520 | February 1983 | Arbiqne |
| 460003 | May 1928 | DE2 | |||
Other References
|
New Equipment Digest (vol. 48, No. 2, Feb. 1983) Scientific Library Call No. TA/401/.N45 (p. 88: Lightweight Respirator).. |
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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