Patent US2694160A successfully refreshed from Google Patents.
US2694160A
Expired / Lapsed
US
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Expandable straight line trajectory radar and sonar indicator
Assignee: AT&T Inc
•
Filing: 1948-08-31
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Granted: 1954-11-09
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Expires: 1968-08-31
Abstract
No abstract record available.
Inventors
- 👤 Wilton T Rea
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:24
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/04; G01S7/06; G01S7/10; G01S7/12; G01S7/14; G01S7/52; G01S7/56; G01S7/62; G01S7/6218
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2437286A
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US2421312A
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US2480208A
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US2585855A
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US2433002A
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US2421521A
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US2459481A
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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) | 1957-11-08 | 1958-05-10 | 1958-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-08 | 1962-05-10 | 1962-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-08 | 1966-05-10 | 1966-11-09 | $7700.00 | Window Closed / Lapsed |