Patent US2850718A successfully refreshed from Google Patents.
US2850718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Counting circuits
Assignee: Automatic Telephone and Electric Co Ltd
•
Filing: 1955-01-25
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Granted: 1958-09-02
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Expires: 1975-01-25
Abstract
No abstract record available.
Inventors
- 👤 Davison Alan
- 👤 Threadgold Ronald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:02
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2606243A
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US2640872A
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US2703361A
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US2609143A
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US2677725A
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US2689950A
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US2719959A
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US2696599A
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US2740106A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |