US2969439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric switching device
Assignee: Svenska Relafabriken ABN AB
•
Filing: 1957-10-18
•
Granted: 1961-01-24
•
Expires: 1977-10-18
Abstract
No abstract record available.
Inventors
- 👤 Martin H Dubois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:30
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/23
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2395269A
Cited
US2400148A
Cited
US2433836A
Cited
US2519899A
Cited
US2534715A
Cited
US2767252A
Cited
US2760014A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-24 | 1964-07-25 | 1965-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-24 | 1968-07-25 | 1969-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-24 | 1972-07-25 | 1973-01-24 | $7700.00 | Window Closed / Lapsed |