H04M 1/647
Using magnetic tape
Official title: {using magnetic tape (H04M1/642 takes precedence)}
H04M1/647 (Using magnetic tape) appears on 8 US grants and 1 published applications in this corpus.
Search patents in H04M- Granted patents
- 8
- Published applications
- 1
- Assignees
- 5
- Inventors
- 12
- Latest grant
- 2 Jan 1996
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Automated audio output device for a telephone set2 Jan 1996US 5,481,599 A
- Storage apparatus which controls the usage of a storage medium18 Jan 1994US 5,280,517 ACanon Kabushiki Kaisha
- Multiline telephone answering system and interface therefore19 May 1992US 5,115,464 A
- Automatic telephone answering device with multiple outgoing messages and selecting means14 Nov 1989US 4,881,260 AInventa Electronics Co., Ltd.
- Multiline telephone answering system and interface therefor22 Aug 1989US 4,860,338 A
Most cited
By later US patents
- Automated audio output device for a telephone set101US 5,481,599 A1996
- Automatic telephone monitoring system9US 3,967,068 AMatsushita Electric Industrial Co., Ltd. · 1976
- Multiline telephone answering system and interface therefor6US 4,860,338 A1989
- Combined tape recording and playback apparatus and telephone answering apparatus controlled by pre-recorded signals3US 4,335,278 AElite Electrical Products Limited · 1982
- Storage apparatus which controls the usage of a storage medium3US 5,280,517 ACanon Kabushiki Kaisha · 1994