US2662183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase shift oscillating system
Assignee: Zenith Electronics LLC
•
Filing: 1950-04-06
•
Granted: 1953-12-08
•
Expires: 1970-04-06
Abstract
No abstract record available.
Inventors
- 👤 Jack E Bridges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:46
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/20; H03B5/22; H04; H04N; H04N5/00; H04N5/04; H04N5/12; H04N5/126
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2173427A
Cited
US2386892A
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US2375273A
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US2346396A
Cited
US2451858A
Cited
US2441567A
Cited
US2568868A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-07 | 1957-06-08 | 1957-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-07 | 1961-06-08 | 1961-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-07 | 1965-06-08 | 1965-12-08 | $7700.00 | Window Closed / Lapsed |