US3207850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alarm system with personally concealable radio-frequency transmitter
Assignee: Individual
•
Filing: 1962-10-23
•
Granted: 1965-09-21
•
Expires: 1982-10-23
Abstract
No abstract record available.
Inventors
- 👤 Foreman Davis Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:46
CPC Classifications
H; H04; H04M; H04M11/00; H04M11/04; H04M11/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2022991A
Cited
US2135476A
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US2522615A
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US2766358A
Cited
US2847507A
Cited
US2827514A
Cited
US2894121A
Cited
US3056951A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |