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| 1972 | E | Home Telephone F (pulse-dialing home telephone) | ||
| 1973 | E | Home Telephone F (tone-dialing home telephone) | ||
| 1975 | ||||
| 1978 | E | Home Telephone D | ||
| 1985 | E | Howdy Home Telephone | ||
| E | Howdy Home Telephone S | |||
| 1986 | E | Howdy Home Telephone Super D | ||
| 1988 | E | Howdy Home Telephone SX | ||
| 1989 | E | Howdy Home Telephone DX | ||
| 1990 | E | Howdy Home Telephone SXII | ||
| 1991 | E | Howdy Home Telephone DXII | ||
| 1993 | E | Home Telephone VX |