| Number | Name | Date | Kind |
|---|---|---|---|
| 3768100 | Colman et al. | Oct 1973 | A |
| 4555816 | Broersma | Dec 1985 | A |
| 4587677 | Clement | May 1986 | A |
| D311792 | Gallet | Oct 1990 | S |
| 5148550 | Hodgkinson et al. | Sep 1992 | A |
| D355731 | Gringras | Feb 1995 | S |
| 5655227 | Sundberge et al. | Aug 1997 | A |
| D407858 | Cyr et al. | Apr 1999 | S |
| D411339 | Copeland et al. | Jun 1999 | S |
| Entry |
|---|
| “Universal Gas Masks, WIG and WAG Series”, Willson Products for Industrial Safety catalog #57, Mar. 1957. |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 29/108247 | Jul 1999 | US |
| Child | 29/127604 | US |