Number | Name | Date | Kind |
---|---|---|---|
D234162 | Andersen | Jan 1975 | |
D236385 | Calander et al. | Aug 1975 | |
D240563 | Whitehead et al. | Jul 1976 | |
3805790 | Kaczmarzyk et al. | Apr 1974 | |
3881490 | Whitehead et al. | May 1975 | |
3886941 | Duane et al. | Jun 1975 | |
3886942 | Bernardin | Jun 1975 |