Patent US2907028A successfully refreshed from Google Patents.
US2907028A
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US
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Apparatus for trajectory determination
Assignee: Individual
•
Filing: 1953-02-20
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Granted: 1959-09-29
•
Expires: 1973-02-20
Abstract
No abstract record available.
Inventors
- 👤 Robert J Stirton
- 👤 Leitmann George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:51
CPC Classifications
F; F41; F41G; F41G7/00; F41G7/20; F41G7/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2086742A
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US2134535A
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US2413620A
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US2586783A
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US2406953A
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US2515332A
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US2448587A
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US2628836A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |