Patent Grant
D305562
| Number | Name | Date | Kind |
|---|---|---|---|
| D191241 | Anderson | Aug 1961 | |
| D211946 | Flury | Aug 1968 | |
| 2198890 | Stilwell | Apr 1940 | |
| 3110748 | Myklebust | Nov 1963 | |
| 3229450 | Stern | Jan 1966 | |
| 3873806 | Schossow | Mar 1975 | |
| 4028526 | Schossow | Jun 1977 | |
| 4399080 | Swank | Aug 1983 | |
| 4624806 | Koszyk | Jul 1986 |
| Entry |
|---|
| Brochure "DeVilbiss Humidifiers and Vaporizers", published prior to applicant's invention (10/22/87). |
