US2600482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric delay circuit
Assignee: AT&T Inc
•
Filing: 1948-05-13
•
Granted: 1952-06-17
•
Expires: 1968-05-13
Abstract
No abstract record available.
Inventors
- 👤 Raymond E Collis
- 👤 Joseph W Dehn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:31
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/28; H03K17/288
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1762811A
Cited
US1917418A
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US2040425A
Cited
US2114016A
Cited
US2372005A
Cited
US2445051A
Cited
US2370727A
Cited
US2360721A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-17 | 1955-12-17 | 1956-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-17 | 1959-12-17 | 1960-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-17 | 1963-12-17 | 1964-06-17 | $7700.00 | Window Closed / Lapsed |