Patent US2417330A successfully refreshed from Google Patents.
US2417330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lens for optical purposes
Assignee: Thales Optronics Ltd
•
Filing: 1942-01-31
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Granted: 1947-03-11
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Expires: 1962-01-31
Abstract
No abstract record available.
Inventors
- 👤 Strang John Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:29
CPC Classifications
G; G02; G02B; G02B13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE316246C
Cited
US415040A
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US775353A
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US1468762A
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US1616751A
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US1910115A
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US2076190A
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US2158507A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-10 | 1950-09-09 | 1951-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-10 | 1954-09-09 | 1955-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-10 | 1958-09-09 | 1959-03-11 | $7700.00 | Window Closed / Lapsed |