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US2993403A
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Periodically displaced or rotatable elements
Assignee: HARRIES TELEVISION RES Ltd
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Filing: 1957-06-07
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Granted: 1961-07-25
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Expires: 1977-06-07
Abstract
No abstract record available.
Inventors
- 👤 Harries John Henry Owen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:33
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/02; H01Q3/04; H01Q3/06; H04; H04N; H04N3/00; H04N3/02; H04N3/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2066715A
Cited
GB490837A
Cited
US2179607A
Cited
US2320380A
Cited
US2437323A
Cited
US2463785A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |