Patent US3067290A successfully refreshed from Google Patents.
US3067290A
Expired / Lapsed
US
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Metering arrangements for automatic telephone systems
Assignee: Automatic Telephone and Electric Co Ltd
•
Filing: 1958-03-10
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Granted: 1962-12-04
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Expires: 1978-03-10
Abstract
No abstract record available.
Inventors
- 👤 Greenaway John Frank
- 👤 Hampson Peter Samuel
- 👤 Marwing Kenneth George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:16
CPC Classifications
H; H04; H04M; H04M15/00; H04M15/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1872842A
Cited
US2749037A
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US2805286A
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US2850571A
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US2723311A
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GB763828A
Cited
US2849535A
Cited
US2723312A
Cited
US2897279A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-03 | 1966-06-04 | 1966-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-03 | 1970-06-04 | 1970-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-03 | 1974-06-04 | 1974-12-04 | $7700.00 | Window Closed / Lapsed |