Patent US2984157A successfully refreshed from Google Patents.
US2984157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Missile launching systems
Assignee: Individual
•
Filing: 1950-09-29
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Granted: 1961-05-16
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Expires: 1970-09-29
Abstract
No abstract record available.
Inventors
- 👤 Charles A Johnstone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:30
CPC Classifications
F; F41; F41A; F41A9/00; F41A9/01; F41A9/04; F41F; F41F3/00; F41F3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2342022A
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US2381332A
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US2380024A
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US2447315A
Cited
GB561646A
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US2585030A
Cited
US2517333A
Cited
US2451745A
Cited
US2546823A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |