Patent Grant
D371797
| Number | Name | Date | Kind |
|---|---|---|---|
| D243207 | Van der Lely | Jan 1977 | |
| D248557 | Gobin et al. | Jul 1978 | |
| D300223 | Livingstone | Mar 1989 | |
| D302162 | Rutherford | Jul 1989 | |
| 2286095 | Innes | Jun 1942 | |
| 2633231 | Pilcher | Mar 1953 | |
| 2644292 | Oberholtz et al. | Jul 1953 | |
| 2701634 | Carroll | Feb 1955 | |
| 2748921 | White | Jun 1956 | |
| 2849103 | Scheffter et al. | Aug 1958 | |
| 3142375 | Luke | Jul 1964 | |
| 3215259 | Evans | Nov 1965 | |
| 3282408 | Lohrentz | Nov 1966 | |
| 3411615 | Schwalm | Nov 1968 | |
| 4271956 | Hutchinson et al. | Jun 1981 | |
| 4539801 | Field | Sep 1985 | |
| 5293730 | Bich et al. | Mar 1994 |
