US2871350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Delay sweep circuit
Assignee: Allen B du Mont Laboratories Inc
•
Filing: 1954-07-29
•
Granted: 1959-01-27
•
Expires: 1974-07-29
Abstract
No abstract record available.
Inventors
- 👤 Robert F Casey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:11
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/20; G01R13/22; G01R13/32; H; H03; H03K; H03K4/00; H03K4/06; H03K4/08; H03K4/10; H03K4/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2701306A
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US2557770A
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US2532534A
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US2570875A
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US2688075A
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US2745956A
Cited
US2695955A
Cited
US2743357A
Cited
US2779870A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |