Patent Grant
D294532
| Number | Name | Date | Kind |
|---|---|---|---|
| D90482 | Ferris | Aug 1933 | |
| D137590 | Babson et al. | Apr 1944 | |
| D274659 | Vandenberg et al. | Jul 1984 | |
| 3792686 | Needham et al. | Feb 1974 | |
| 3805742 | Shuliek et al. | Apr 1974 | |
| 3810442 | Hudson et al. | May 1974 | |
| 4194467 | Nielsen et al. | Mar 1980 | |
| 4362127 | Nielsen et al. | Dec 1982 | |
| 4419961 | Vandenberg et al. | Dec 1983 | |
| 4508059 | Anderson | Apr 1985 | |
| 4513687 | DeJong | Apr 1985 |
