Number | Name | Date | Kind |
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2021086 | Oskamp | Nov 1935 | A |
2642061 | Boyer | Jun 1953 | A |
4088461 | Brauer | May 1978 | A |
4549543 | Moon | Oct 1985 | A |
4756308 | Ryback | Jul 1988 | A |
4971052 | Edwards | Nov 1990 | A |
5036844 | Pouchot et al. | Aug 1991 | A |
D352551 | Andersson | Nov 1994 | S |
D408907 | Moreno | Apr 1999 | S |
5906203 | Klockseth et al. | May 1999 | A |
6176239 | Grove et al. | Jan 2001 | B1 |
Number | Date | Country |
---|---|---|
3818295 | Jul 1989 | DE |
0 108 560 | May 1984 | EP |
0 164 946 | Dec 1985 | EP |
0 078 110 | May 1986 | EP |
0 352 938 | Oct 1993 | EP |
572847 | Jun 1924 | FR |
WO 8300632 | Mar 1983 | WO |
WO 9629116 | Sep 1996 | WO |
Entry |
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Lab Safety Supply “MSA Ultra Elite” Full face respirator p. 296 @1999.* |
Domestic Preparedness—Powered Air Protection for First Responders C420 Mil-Spec PAPR; SCOTT a Scott Technologies Company (dated Sep. 1999) (a four page brochure). |