US2479531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Position indicating system
Assignee: EDITORS AND ENGINEERS Ltd
•
Filing: 1945-01-24
•
Granted: 1949-08-16
•
Expires: 1965-01-24
Abstract
No abstract record available.
Inventors
- 👤 Joseph T Webber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:26
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/28; G01S7/282
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1002141A
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US2007076A
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US2063610A
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US2082347A
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US2204438A
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US2252083A
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US2361956A
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US2379362A
Cited
US2403625A
Cited
US2400641A
Cited
US2365949A
Cited
US2419525A
Cited
US2399671A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-15 | 1953-02-14 | 1953-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-15 | 1957-02-14 | 1957-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-15 | 1961-02-14 | 1961-08-16 | $7700.00 | Window Closed / Lapsed |