Patent US2320510A successfully refreshed from Google Patents.
Patent US2849955A successfully refreshed from Google Patents.
US2849955A
Expired / Lapsed
US
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Rocket construction
Assignee: Individual
•
Filing: 1955-06-30
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Granted: 1958-09-02
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Expires: 1975-06-30
Abstract
No abstract record available.
Inventors
- 👤 Spurgeon E Smathers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:16
CPC Classifications
F; F42; F42B; F42B10/00; F42B10/02; F42B10/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1307607A
Cited
FR522506A
Cited
US2145508A
Cited
US2398928A
Cited
US2691495A
Cited
US2661692A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |