US2449923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Timing modulation system
Assignee: RCA Corp
•
Filing: 1943-03-19
•
Granted: 1948-09-21
•
Expires: 1963-03-19
Abstract
No abstract record available.
Inventors
- 👤 Earl I Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:03
CPC Classifications
H; H03; H03K; H03K7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2181568A
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US2279659A
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US2333688A
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US2225046A
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US2252293A
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US2297926A
Cited
US2318061A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-21 | 1952-03-22 | 1952-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-21 | 1956-03-22 | 1956-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-21 | 1960-03-22 | 1960-09-21 | $7700.00 | Window Closed / Lapsed |