H04M 1/6515
Using magnetic tape
Official title: {using magnetic tape (H04M1/6505 takes precedence)}
H04M1/6515 (Using magnetic tape) appears on 61 US grants and 3 published applications in this corpus.
Search patents in H04M- Granted patents
- 61
- Published applications
- 3
- Assignees
- 28
- Inventors
- 63
- Latest grant
- 13 Dec 2005
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 5 | 0 |
| 1989 | 7 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 2 |
| 2005 | 1 | 0 |
| 2006 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Personal caller ID13 Dec 2005US 6,975,707 B2
- Personal caller I. D.17 Feb 2004US 6,693,995 B1
- Wireless voice messaging device for use with cassette player5 Aug 1997US 5,654,942 ASony Corporation
- Single cassette answering machine with dual phone line and mailbox features18 Jun 1996US 5,528,669 AKingtronics Industrial Co., Ltd.
- Telephone answering machine21 May 1996US 5,519,765 AMatsushita Electric Industrial Co., Ltd.
Most cited
By later US patents
- Wireless voice messaging device for use with cassette player68US 5,654,942 ASony Corporation · 1997
- Cordless telephone system having a telephone answering machine function20US 5,220,594 ASony Corporation · 1993
- Telephone answering machine having solid state and magnetic tape storage for outgoing announcements14US 4,959,852 AAT&T Information Systems Inc. · 1990
- Telephone answering device with separate announcement erase and playback control timing periods13US 4,032,712 AData Time, Inc. · 1977
- Dual tape transport system with tensioning means13US 4,199,794 ANewell Research Corporation · 1980