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Patent US2432982A successfully refreshed from Google Patents.
US2432982A
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Inductive coupling
Assignee: Sperry Gyroscope Co Inc
•
Filing: 1942-11-11
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Granted: 1947-12-23
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Expires: 1962-11-11
Abstract
No abstract record available.
Inventors
- 👤 Frederick D Braddon
- 👤 Lanty Loren J De
- 👤 Orland E Esval
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:48
CPC Classifications
H; H01; H01F; H01F38/00; H01F38/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1394901A
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US2049232A
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US2087636A
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DE658259C
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US2126935A
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US2220055A
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US2221767A
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US2283940A
Cited
US2242360A
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US2313682A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-22 | 1951-06-23 | 1951-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-22 | 1955-06-23 | 1955-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-22 | 1959-06-23 | 1959-12-23 | $7700.00 | Window Closed / Lapsed |