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Your search returned 92 patents.
( 379/69 in Current US Classification ) |
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| 1 |
| Patent ID | Title | Date Filed |
| 5371787 | Machine answer detection
| March 1, 1993 |
| 5343509 | Emergency information facsimile transmitter
| August 30, 1991 |
| 5341414 | Calling number verification service
| February 5, 1992 |
| 5317626 | Wake-up and reminder system for a telephone
| May 13, 1991 |
| 5313516 | Telephone answering device with automatic function
| May 7, 1992 |
| 5268957 | Automatic call-back "camp-on" service for communication systems
| June 24, 1991 |
| 5241584 | Response time evaluation unit
| August 22, 1990 |
| 5172404 | System for coupling telephone answering device and voice mail apparatus together
| September 26, 1990 |
| 5099509 | Integration of voice store and forward facility
| April 17, 1987 |
| 5075894 | Telephone message forwarding apparatus
| October 28, 1987 |
| 4998272 | Personal voice mail system
| June 15, 1989 |
| 4941168 | System for the recognition of automated telephone answering devices and delivery of prerecorded messages to such devices
| September 21, 1988 |
| 4933964 | Pacing of telephone calls for call origination management systems
| July 25, 1989 |
| 4873713 | Automatic telephone answering apparatus and method
| November 6, 1987 |
| 4825460 | Line interface unit for caller-controlled receipt and delivery of voice messages
| June 22, 1988 |
| 4766604 | Method for receiving and delivering voice messages
| November 7, 1986 |
| 4719647 | Telephone message retrieval system with improved processor and retrieval console
| January 30, 1984 |
| 4696031 | Signal detection and discrimination using waveform peak factor
| December 31, 1985 |
| 4670628 | Reprogrammable call forwarding device
| April 19, 1984 |
| 4667065 | Apparatus and methods for electrical signal discrimination
| February 28, 1985 |
| 4602127 | Diagnostic data recorder
| March 9, 1984 |
| 4585906 | Electronic audio communication system with user controlled message address
| September 29, 1982 |
| 4581486 | Electronic audio communications system with user accessible message groups
| September 29, 1982 |
| 4492820 | Telephone alarm system
| October 24, 1980 |
| 4438296 | Multimessage automatic telephone polling methods and apparatus
| September 2, 1980 |
| 4406925 | Message delivery system
| August 24, 1981 |
| 4405833 | Telephone call progress tone and answer identification circuit
| June 17, 1981 |
| 4304968 | Telephone electronic answering device
| September 24, 1979 |
| 4188510 | Telephone sequential number dialer with number incrementing
| July 3, 1978 |
| 4160125 | Telephone polling apparatus
| May 23, 1977 |
| 4143243 | Telephone system
| September 1, 1977 |
| 4007333 | Automatic call transmitter of the dual tone multifrequency type
| May 31, 1974 |
| 4001508 | Message communication system for telephone lines
| September 17, 1975 |
| 3943289 | Automatic telephone caller
| July 12, 1974 |
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