Patent Grant
D424893
| Number | Name | Date | Kind |
|---|---|---|---|
| D229708 | Dugan-Chapman | Dec 1973 | |
| D248935 | Stutelberg et al. | Aug 1978 | |
| 3142133 | Brooks | Jul 1964 | |
| 3660934 | Pollack et al. | May 1972 | |
| 3961444 | Skaife | Jun 1976 | |
| 4213274 | Skaife | Jul 1980 | |
| 4495725 | Talbot | Jan 1985 | |
| 4528774 | Skaife | Jul 1985 | |
| 4584791 | Wolf | Apr 1986 | |
| 4887388 | Waltel, Jr. | Dec 1989 | |
| 5022183 | Bohlmann | Jun 1991 | |
| 5315786 | Smith et al. | May 1994 | |
| 5361534 | Burns et al. | Nov 1994 | |
| 5581936 | Belgiorno | Dec 1996 |
