US2702379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound wave direction finding system
Assignee: RCA Corp
•
Filing: 1944-09-26
•
Granted: 1955-02-15
•
Expires: 1964-09-26
Abstract
No abstract record available.
Inventors
- 👤 Loy E Barton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:29
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1357210A
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US1591252A
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US1839290A
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US1973673A
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US1955505A
Cited
US1968068A
Cited
US2077401A
Cited
US2166991A
Cited
US2349370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-14 | 1958-08-16 | 1959-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-14 | 1962-08-16 | 1963-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-14 | 1966-08-16 | 1967-02-15 | $7700.00 | Window Closed / Lapsed |