Patent US2938430A successfully refreshed from Google Patents.
US2938430A
Expired / Lapsed
US
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Screw retained spin rocket
Assignee: North American Aviation Corp
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Filing: 1954-05-17
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Granted: 1960-05-31
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Expires: 1974-05-17
Abstract
No abstract record available.
Inventors
- 👤 Noel W Pion
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:45
CPC Classifications
F; F41; F41F; F41F3/00; F41F3/04; F41F3/048; F42; F42B; F42B10/00; F42B10/02; F42B10/26; F42B10/28; F42B10/30; F42B5/00; F42B5/02; F42B5/03; F42B5/035
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US533572A
Cited
GB189425326A
Cited
US1102653A
Cited
US1307607A
Cited
US1611431A
Cited
US2313030A
Cited
FR912398A
Cited
GB672346A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |