US2495704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant amplitude wave train generator
Assignee: STC PLC
•
Filing: 1942-11-30
•
Granted: 1950-01-31
•
Expires: 1962-11-30
Abstract
No abstract record available.
Inventors
- 👤 Rosa Louis A De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:47
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/78
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1837903A
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US1923345A
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US2181568A
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US2266047A
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US2225046A
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US2284337A
Cited
GB548148A
Cited
US2347826A
Cited
US2370685A
Cited
US2374781A
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US2426216A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-30 | 1953-08-01 | 1954-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-30 | 1957-08-01 | 1958-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-30 | 1961-08-01 | 1962-01-31 | $7700.00 | Window Closed / Lapsed |