US2416790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission line bridge circuit
Assignee: Sperry Gyroscope Co Inc
•
Filing: 1941-01-28
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Granted: 1947-03-04
•
Expires: 1961-01-28
Abstract
No abstract record available.
Inventors
- 👤 Wilmer L Barrow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:21
CPC Classifications
H; H01; H01P; H01P5/00; H01P5/12; H01P5/16; G; G01; G01R; G01R27/00; G01R27/02; H01P1/00; H01P1/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2147809A
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US2199083A
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US2232592A
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US2207531A
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US2213104A
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US2244756A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-03 | 1950-09-02 | 1951-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-03 | 1954-09-02 | 1955-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-03 | 1958-09-02 | 1959-03-04 | $7700.00 | Window Closed / Lapsed |