Patent US2532221A successfully refreshed from Google Patents.
US2532221A
Expired / Lapsed
US
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Pulse modulated echo ranging system
Assignee: Lanteris Space LLC
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Filing: 1945-01-16
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Granted: 1950-11-28
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Expires: 1965-01-16
Abstract
No abstract record available.
Inventors
- 👤 William E Bradley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:37
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/08; G01S13/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1924174A
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US2333688A
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US2415095A
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US2407198A
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US2417136A
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US2431344A
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US2454772A
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US2422382A
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US2419569A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-27 | 1954-05-29 | 1954-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-27 | 1958-05-29 | 1958-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-27 | 1962-05-29 | 1962-11-28 | $7700.00 | Window Closed / Lapsed |