Patent US6345496B1 successfully refreshed from Google Patents.
US2835170A
Expired / Lapsed
US
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Rocket launcher
Assignee: North American Aviation Corp
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Filing: 1952-12-20
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Granted: 1958-05-20
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Expires: 1972-12-20
Abstract
No abstract record available.
Inventors
- 👤 James H Kindelberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:47
CPC Classifications
F; F41; F41F; F41F3/00; F41F3/04; F41F3/048
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US533572A
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US1018312A
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FR510282A
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DE373719C
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US2500117A
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US2472111A
Cited
FR912398A
Cited
GB672346A
Cited
US2701984A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |