US3519745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selected pre-recorded telephonic message transmission system dialling plural pre-selected numbers and dialling a new number if the called number is busy or does not answer
Assignee: General Alarm Corp
•
Filing: 1966-10-18
•
Granted: 1970-07-07
•
Expires: 1986-10-18
Abstract
No abstract record available.
Inventors
- 👤 Robert Colman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:29
CPC Classifications
H; H04; H04M; H04M11/00; H04M11/04; H04M11/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3124650A
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US3098123A
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US3176082A
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US3188392A
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US3272925A
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US3140349A
Cited
US3287500A
Cited
US3381092A
Cited
US3360607A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-06 | 1974-01-05 | 1974-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-06 | 1978-01-05 | 1978-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-06 | 1982-01-05 | 1982-07-07 | $7700.00 | Window Closed / Lapsed |