US2210384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical filter arrangement
Assignee: RCA Corp
•
Filing: 1938-02-19
•
Granted: 1940-08-06
•
Expires: 1958-02-19
Abstract
No abstract record available.
Inventors
- 👤 Rust Noel Meyer
- 👤 Brailsford Joseph Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:46
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/01; H03H7/0153; H03H7/0161; H03F; H03F1/00; H03F1/34; H03F1/36; H03H7/17; H03H7/1741; H03H7/1775; H03H7/1791
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-08-06 | 1944-02-05 | 1944-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-08-06 | 1948-02-05 | 1948-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-08-06 | 1952-02-05 | 1952-08-06 | $7700.00 | Window Closed / Lapsed |