US3125650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealed reed switch
Assignee: AT&T Inc
•
Filing: 1961-08-03
•
Granted: 1964-03-17
•
Expires: 1981-08-03
Abstract
No abstract record available.
Inventors
- 👤 Walter B Ellwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:17
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/28; H01H51/284; H01H5/00; H01H5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2720693A
Cited
US2994122A
Cited
US2999915A
Cited
US2929895A
Cited
US2957961A
Cited
US2907846A
Cited
US2898422A
Cited
US3020369A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-17 | 1967-09-16 | 1968-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-17 | 1971-09-16 | 1972-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-17 | 1975-09-16 | 1976-03-17 | $7700.00 | Window Closed / Lapsed |