US2677758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical tracking circuit
Assignee: United States, WAR, Secretary of
•
Filing: 1945-12-10
•
Granted: 1954-05-04
•
Expires: 1965-12-10
Abstract
No abstract record available.
Inventors
- 👤 Carl C Robinson
- 👤 William J Tull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:53
CPC Classifications
F; F41; F41G; F41G7/00; F41G7/20; F41G7/22; F41G7/2246; F41G7/2273; F41G7/2286; G; G01; G01S; G01S13/00; G01S13/66; G01S13/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2250284A
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US2403975A
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US2534862A
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US2408821A
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US2455265A
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US2495753A
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US2451632A
Cited
US2512923A
Cited
US2543072A
Cited
US2516356A
Cited
US2430570A
Cited
US2460112A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |