US2621307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scanning circuit arrangement for television and the like apparatus
Assignee: EMI Ltd
•
Filing: 1947-11-25
•
Granted: 1952-12-09
•
Expires: 1967-11-25
Abstract
No abstract record available.
Inventors
- 👤 Bull Eric William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:48
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/34; H03F1/36; H03K; H03K4/00; H03K4/06; H03K4/08; H03K4/10; H03K4/26; H03K4/39; H03K4/43
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2241762A
Cited
US2229702A
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US2251851A
Cited
US2235131A
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US2309672A
Cited
US2284378A
Cited
US2360697A
Cited
US2360857A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-09 | 1956-06-09 | 1956-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-09 | 1960-06-09 | 1960-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-09 | 1964-06-09 | 1964-12-09 | $7700.00 | Window Closed / Lapsed |