The three circular elements shown in broken lines in
The three circular elements shown in broken lines in
Number | Name | Date | Kind |
---|---|---|---|
D230937 | Bartasevich | Mar 1974 | S |
D242759 | Painter et al. | Dec 1976 | S |
D261471 | Koziol | Oct 1981 | S |
D292473 | Fisher | Oct 1987 | S |
6484625 | Waltman | Nov 2002 | B2 |
D491415 | Rummel et al. | Jun 2004 | S |
6810793 | Hsu | Nov 2004 | B1 |