US2564048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carrier and radio termination for telephone circuits
Assignee: Automatic Electric Laboratories Inc
•
Filing: 1948-09-16
•
Granted: 1951-08-14
•
Expires: 1968-09-16
Abstract
No abstract record available.
Inventors
- 👤 Everhard H B Bartelink
- 👤 Jr Edward Daskam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:11
CPC Classifications
H; H04; H04M; H04M7/00; H04M7/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1528010A
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US1688453A
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US1688454A
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US1688451A
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US1688452A
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US2265056A
Cited
US2454498A
Cited
US2457434A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |