Pair of filter cartridges for a powered air-purifying respirator
Petherbridge , et al. July 15, 2
U.S. patent number D477,401 [Application Number D/127,312] was granted by the patent office on 2003-07-15 for pair of filter cartridges for a powered air-purifying respirator. This patent grant is currently assigned to 3M Innovative Properties Company. Invention is credited to David Cook, Ian T. Petherbridge.
| United States Patent | D477,401 |
| Petherbridge , et al. | July 15, 2003 |
Pair of filter cartridges for a powered air-purifying respirator
Claims
The ornamental design for a pair of filter cartridges for a powered air-purifying respirator.
| Inventors: | Petherbridge; Ian T. (Bognor Regis, GB), Cook; David (Bracknell, GB) |
|---|---|
| Assignee: | 3M Innovative Properties
Company (St. Paul, MN) |
| Appl. No.: | D/127,312 |
| Filed: | August 3, 2000 |
| Current U.S. Class: | D24/110.1 |
| Current International Class: | 2902 |
| Field of Search: | ;D24/110.1,110.2,162,164,110.3,110.5 ;128/206.17,206.28,206.21,206.12,205.24,205.25,205.27,205.29,205.12,203.29 |
References Cited [Referenced By]
U.S. Patent Documents
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| RE35062 | October 1995 | Brostrom et al. |
| D396283 | July 1998 | Scholey |
| 5906203 | May 1999 | Klockseth et al. |
| 6055983 | May 2000 | Metzger |
| D440301 | April 2001 | Fecteau et al. |
| 3818295 | Jul 1989 | DE | |||
| 0 108 560 | May 1984 | EP | |||
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| 0 078 110 | May 1986 | EP | |||
| 0 352 938 | Oct 1993 | EP | |||
| 572847 | Jun 1924 | FR | |||
| 64-49257 | Mar 1989 | JP | |||
| WO 83/00632 | Mar 1983 | WO | |||
| WO 96/29116 | Sep 1996 | WO | |||
Other References
|
Domestic Preparedness--Powered Air Protection for First Responders C420 Mil-Spec PAPR; SCOTT a Scott Technologies Company (dated Sep. 1999) (a four page brochure).. |
Primary Examiner: Simmons; Ian
Attorney, Agent or Firm: Hanson; Karl G
Description
FIG. 1 is a perspective view of a pair of filter cartridges for a powered air-purifying respirator, showing the new design in solid lines.
FIG. 2 is a top view thereof.
FIG. 3 is a left side view thereof.
FIG. 4 is a front view thereof.
FIG. 5 is a right side view thereof.
FIG. 6 is a bottom view thereof.
FIG. 7 is a rear view thereof; and,
FIG. 8 is a front view thereof, only illustrating the solid line portion of the design.
The broken line showing forms no part of the claimed design. The shading is provided only to illustrate contour; it is not indicative of texture, etc.
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