US2582588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Track control unit
Assignee: Individual
•
Filing: 1947-08-11
•
Granted: 1952-01-15
•
Expires: 1967-08-11
Abstract
No abstract record available.
Inventors
- 👤 Fennessy Edward
- 👤 Graham E Roberts
- 👤 Calvert Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:22
CPC Classifications
G; G01; G01S; G01S5/00; G01S5/02; G01S5/10; G01S1/00; G01S1/02; Y; Y10; Y10T; Y10T74/00; Y10T74/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2027527A
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US2198113A
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US2261252A
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US2341287A
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US2405231A
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US2411494A
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US2362827A
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US2428427A
Cited
US2432158A
Cited
US2527548A
Cited
US2526682A
Cited
US2480152A
Cited
US2444933A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-14 | 1955-07-16 | 1956-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-14 | 1959-07-16 | 1960-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-14 | 1963-07-16 | 1964-01-15 | $7700.00 | Window Closed / Lapsed |