US2728857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic switching
Assignee: RCA Corp
•
Filing: 1952-09-09
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Granted: 1955-12-27
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Expires: 1972-09-09
Abstract
No abstract record available.
Inventors
- 👤 George C Sziklai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 15:54
CPC Classifications
H; H03; H03K; H03K4/00; H03K4/06; H03K4/08; H03K4/48; H03K4/60; H03K4/62; H03K17/00; H03K17/51; H03K17/56; H03K17/60; H03K17/68; H04; H04N; H04N5/00; H04N5/14; H04N5/16; H04N5/165; H04N5/18; H04N5/185
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |