US2518449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Noise limiter
Assignee: Individual
•
Filing: 1945-08-11
•
Granted: 1950-08-15
•
Expires: 1965-08-11
Abstract
No abstract record available.
Inventors
- 👤 James C Coe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:44
CPC Classifications
H; H03; H03G; H03G11/00; H03G11/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2233339A
Cited
US2221728A
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US2247324A
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US2208398A
Cited
US2248267A
Cited
US2300115A
Cited
US2345762A
Cited
US2301620A
Cited
US2434929A
Cited
US2418389A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-14 | 1954-02-13 | 1954-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-14 | 1958-02-13 | 1958-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-14 | 1962-02-13 | 1962-08-15 | $7700.00 | Window Closed / Lapsed |