Number | Name | Date | Kind |
---|---|---|---|
2799500 | Zekowski | Jul 1957 | |
3272511 | Zarich | Sep 1966 | |
3458200 | D'elia et al. | Jul 1969 | |
3545758 | Payne | Dec 1970 | |
3656754 | Clark | Apr 1972 | |
3669453 | DuBois et al. | Jun 1972 | |
3733074 | Daley | May 1973 | |
3834711 | Breslow | Sep 1974 | |
3841637 | Piazza et al. | Oct 1974 | |
3853322 | Mercer | Dec 1974 | |
3933357 | Mercer et al. | Jan 1976 | |
3967825 | Anania | Jul 1976 | |
4848768 | Barlow | Jul 1989 | |
4865610 | Muller | Sep 1989 |
Number | Date | Country |
---|---|---|
1242861 | Feb 1961 | FRX |
Entry |
---|
Catalog--Toys for Special Children --Enabling Devices, 1994. |
Catalog--Able Net Inc., 1994-95 (and pp. 6-7 from another Able Net catalog). |
Catalog--Don Johnston Incorporated, 1994. |
Catalog--Communication Aids for Children and Adults, Crestwood Company, 1994. |
ABLEDATA search report, Feb. 8, 1995. |