US2513426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone system, including a line finder allotter
Assignee: Automatic Electric Laboratories Inc
•
Filing: 1946-10-11
•
Granted: 1950-07-04
•
Expires: 1966-10-11
Abstract
No abstract record available.
Inventors
- 👤 Clarence E Lomax
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:01
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/0016
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1578420A
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US1762700A
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US1849694A
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US2005595A
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US2115320A
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US2133415A
Cited
US2135921A
Cited
US2200803A
Cited
US2214256A
Cited
US2291496A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-03 | 1954-01-02 | 1954-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-03 | 1958-01-02 | 1958-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-03 | 1962-01-02 | 1962-07-04 | $7700.00 | Window Closed / Lapsed |