Patent US2156061A successfully refreshed from Google Patents.
US2156061A
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System for determining positions by radio beacons
Assignee: Alcatel Lucent Deutschland AG
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Filing: 1936-12-17
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Granted: 1939-04-25
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Expires: 1956-12-17
Abstract
No abstract record available.
Inventors
- 👤 Muller Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:29
CPC Classifications
H; H04; H04L; H04L27/00; H04L27/02; H04L27/04; G; G01; G01S; G01S1/00; G01S1/02; G01S1/08; G01S1/44; H02; H02J; H02J13/00; H02J13/13; H02J13/18; H02J13/34; Y; Y02; Y02B; Y02B90/00; Y02B90/20; Y04; Y04S; Y04S40/00; Y04S40/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-04-24 | 1942-10-24 | 1943-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-04-24 | 1946-10-24 | 1947-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-04-24 | 1950-10-24 | 1951-04-25 | $7700.00 | Window Closed / Lapsed |