Patent Grant
D349982
| Number | Name | Date | Kind |
|---|---|---|---|
| D231369 | Kilham | Apr 1974 | |
| D251021 | Blasbalg | Feb 1979 | |
| D269355 | Blasbalg | Dec 1982 | |
| 3568641 | Kilham | Mar 1971 | |
| 4188913 | Earl et al. | Feb 1980 | |
| 4259927 | Clarke | Apr 1981 | |
| 4318364 | Bescherer | Mar 1982 | |
| 4829934 | Blasbalg | May 1989 | |
| 4996947 | Petrides | Mar 1991 | |
| 5123380 | Edwards | Jun 1992 | |
| 5215039 | Bescherer | Jun 1993 |
| Number | Date | Country |
|---|---|---|
| 296944 | May 1954 | CHX |
