US2467368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Submarine sound direction determining system
Assignee: Submarine Signal Co
•
Filing: 1943-09-23
•
Granted: 1949-04-19
•
Expires: 1963-09-23
Abstract
No abstract record available.
Inventors
- 👤 Batchelder Laurence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:16
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1492589A
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US1562950A
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GB199434A
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US1864638A
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US1788522A
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GB323182A
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US1983254A
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US2063534A
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US1904534A
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US2018463A
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US2176469A
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US2166991A
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US2251708A
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US2225046A
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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) | 1952-04-18 | 1952-10-18 | 1953-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-18 | 1956-10-18 | 1957-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-18 | 1960-10-18 | 1961-04-19 | $7700.00 | Window Closed / Lapsed |