US2648027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beam-intensity controlling circuit for cathode-ray oscillograph
Assignee: Allen B du Mont Laboratories Inc
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Filing: 1951-09-04
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Granted: 1953-08-04
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Expires: 1971-09-04
Abstract
No abstract record available.
Inventors
- 👤 William A Geohegan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:46
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/10; H04N3/16; H04N3/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2144775A
Cited
US1933219A
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US2188647A
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US2153655A
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US2292045A
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US2369631A
Cited
US2448771A
Cited
US2465406A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |