VIRSONIC CORPORATION, A CORP. OF CA.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
D298618 Telephone answering setExpiredSep 23, 85Nov 22, 88[]
D296783 Combined telephone handset and standExpiredMay 20, 85Jul 19, 88[]
D296436 Combination telephone and answering setExpiredSep 23, 85Jun 28, 88[]
D296437 Combination telephone and answering setExpiredSep 23, 85Jun 28, 88[]
4724119 Telephone answering machine with an erasable message recorded on the incoming message tape by the manufacturerExpiredMay 28, 86Feb 09, 88[H04M]
D293780 Telephone answering unitExpiredSep 23, 85Jan 19, 88[]
D293568 Telephone answering unitExpiredSep 25, 85Jan 05, 88[]
4713835 Telephone answering machine with automatic recording and visual display of time and dataExpiredMay 09, 86Dec 15, 87[H04M]
4703498 Message playback control system for telephone answering machineExpiredMar 21, 86Oct 27, 87[H04M]
4698706 Reversible drive mechanism for a magnetic tape in a magnetic tape recorderExpiredJul 21, 86Oct 06, 87[G11B]
4689813 Speakerphone telephone answering machineExpiredNov 13, 84Aug 25, 87[H04M]
D290837 Telephone answering machineExpiredSep 18, 84Jul 14, 87[]
D289042 Cordless handset and stand telephone unitExpiredSep 24, 84Mar 31, 87[]
4649562 Drive mechanism for a two-tape telephone answering machine using a single reversible motorExpiredNov 13, 84Mar 10, 87[H04M]
D288561 Cordless handset and stand telephone unitExpiredSep 18, 84Mar 03, 87[]
D287971 Cordless handset and stand telephone unitExpiredJul 30, 84Jan 27, 87[]
4630152 Mechanical drive mechanism for the record/playback head and pinch roller of a cassette-type telephone answering machineExpiredMay 28, 85Dec 16, 86[G11B, F16H]
4626631 Dual line adapter for telephone answering machineExpiredMay 28, 85Dec 02, 86[H04M]
4623758 Hybrid system for recording voice and data signalsExpiredApr 12, 85Nov 18, 86[H04M]
D286634 Cordless handset and stand telephone unitExpiredJun 25, 84Nov 11, 86[]

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