US3193620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supervisory control circuit for multiline telephone answering machine
Assignee: Automatic Electric Laboratories Inc
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Filing: 1962-06-15
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Granted: 1965-07-06
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Expires: 1982-06-15
Abstract
No abstract record available.
Inventors
- 👤 Edward A Marheine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:06
CPC Classifications
H; H04; H04M; H04M3/00; H04M3/42; H04M3/50; H04M3/53; H04M3/533
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-05 | 1969-01-04 | 1969-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-05 | 1973-01-04 | 1973-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-05 | 1977-01-04 | 1977-07-06 | $7700.00 | Window Closed / Lapsed |