Patent US2926335A successfully refreshed from Google Patents.
US2926335A
Expired / Lapsed
US
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Electronic direction circuit
Assignee: North American Aviation Corp
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Filing: 1956-03-02
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Granted: 1960-02-23
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Expires: 1976-03-02
Abstract
No abstract record available.
Inventors
- 👤 John L Bower
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:00
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/20; H; H03; H03K; H03K5/00; H03K5/22; H03K5/26; H03M; H03M1/00; H03M1/12; H03M1/124; H03M1/1245; H03M1/1255
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |