US2579903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Periscopic sextant
Assignee: Kollsman Instrument Corp
•
Filing: 1948-06-16
•
Granted: 1951-12-25
•
Expires: 1968-06-16
Abstract
No abstract record available.
Inventors
- 👤 Victor E Carbonara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:51
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/02; G02B23/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1178474A
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US725570A
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US826155A
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US988279A
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GB544217A
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US2229855A
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US2305437A
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US2280798A
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US2413017A
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US2378282A
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US2484072A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |