| Number | Name | Date | Kind |
|---|---|---|---|
| 2513239 | Hatchett | Jun 1950 | |
| 3629960 | Roush | Dec 1971 | |
| 4028827 | Hufton | Jun 1977 | |
| 4100684 | Berger | Jul 1978 | |
| 4362248 | Vilanova | Dec 1982 | |
| 4408408 | Eng | Oct 1983 | |
| 4423562 | Nichols | Jan 1984 | |
| 4451067 | Williams | May 1984 | |
| 4580360 | Gribb | Apr 1986 | |
| 4603883 | Barbieri et al. | Aug 1986 | |
| 4616755 | Adolfsson | Oct 1986 | |
| 4654906 | Roberts | Apr 1987 | |
| 4655323 | Lassoff | Aug 1997 | |
| 4703571 | McCarthy | Nov 1987 | |
| 4803795 | Questel et al. | Feb 1989 | |
| 4905388 | Sinkow | Mar 1990 | |
| 5316342 | Almo | May 1994 | |
| 5339546 | Rahwan | Aug 1994 | |
| 5427254 | Knieriem | Jun 1995 | |
| 5527568 | Boone et al. | Jun 1996 | |
| 5658635 | Davis et al. | Aug 1997 |
| Entry |
|---|
| Various pages of wall calendars, wall planners, bulletin boards and marker boards (pp. 276-278,283-290, 654-655, 657-661). |