US2426183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflected wave direction finder
Assignee: International Standard Electric Corp
•
Filing: 1943-06-03
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Granted: 1947-08-26
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Expires: 1963-06-03
Abstract
No abstract record available.
Inventors
- 👤 Edmond M Deloraine
- 👤 Labin Emile
- 👤 Henri G Busignies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:44
CPC Classifications
H; H01; H01Q; H01Q25/00; F; F41; F41G; F41G5/00; F41G5/08; G; G01; G01S; G01S1/00; G01S1/02; G01S13/00; G01S13/02; G01S13/06; G01S13/42; G01S13/422
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1867264A
Cited
US2038873A
Cited
GB457176A
Cited
US2176469A
Cited
US2271534A
Cited
US2307023A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-25 | 1951-02-24 | 1951-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-25 | 1955-02-24 | 1955-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-25 | 1959-02-24 | 1959-08-26 | $7700.00 | Window Closed / Lapsed |