Patent US2583711A successfully refreshed from Google Patents.
US2583711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scowen
Assignee: —
•
Filing: —
•
Granted: 1952-01-29
•
Expires: 1969-01-29
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:17
CPC Classifications
H; H04; H04Q; H04Q11/00; H04Q11/02; H03; H03K; H03K17/00; H03K17/51; H03K17/54; H04J; H04J1/00; H04J1/02; H04J1/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2471138A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-28 | 1955-07-30 | 1956-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-28 | 1959-07-30 | 1960-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-28 | 1963-07-30 | 1964-01-29 | $7700.00 | Window Closed / Lapsed |