Patent US154006A successfully refreshed from Google Patents.
US2471418A
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Interference reducing radio impulse receiver
Assignee: International Standard Electric Corp
•
Filing: 1942-09-09
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Granted: 1949-05-31
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Expires: 1962-09-09
Abstract
No abstract record available.
Inventors
- 👤 Earp Charles William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:25
CPC Classifications
H; H04; H04B; H04B14/00; H04B14/02; G; G01; G01S; G01S1/00; G01S1/02; G01S13/00; G01S13/02; G01S13/06; G01S13/08; G01S13/32; G01S13/34; G01S7/00; G01S7/02; G01S7/28; G01S7/285; G01S7/292; G01S7/2921; G01S7/2923; G01S7/2926; G06; G06G; G06G7/00; G06G7/12; G06G7/19; G06G7/1928; H03; H03D; H03D1/00; H03D1/08; H03D1/10; H03K; H03K9/00
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-30 | 1952-11-29 | 1953-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-30 | 1956-11-29 | 1957-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-30 | 1960-11-29 | 1961-05-31 | $7700.00 | Window Closed / Lapsed |