Patent US1605914A successfully refreshed from Google Patents.
US2860190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone systems
Assignee: Automatic Telephone and Electric Co Ltd
•
Filing: 1955-10-18
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Granted: 1958-11-11
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Expires: 1975-10-18
Abstract
No abstract record available.
Inventors
- 👤 Robin D Allum
- 👤 James F Denby
- 👤 James G Pearce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:06
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/0004; H04M; H04M15/00; H04M15/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2619548A
Cited
US2688662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-10 | 1962-05-12 | 1962-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-10 | 1966-05-12 | 1966-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-10 | 1970-05-12 | 1970-11-11 | $7700.00 | Window Closed / Lapsed |