Patent US2769373A successfully refreshed from Google Patents.
US2769373A
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Optical reflecting anamorphotic device for use with objective lens systems
Assignee: Optische Industrie de Oude Delft NV
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Filing: 1954-01-22
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Granted: 1956-11-06
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Expires: 1974-01-22
Abstract
No abstract record available.
Inventors
- 👤 Bouwers Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:51
CPC Classifications
G; G02; G02B; G02B13/00; G02B13/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1747928A
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US1669027A
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US1785347A
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GB354843A
Cited
US1972019A
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US2296943A
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US2628533A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |