US2496675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical projection apparatus with normal illumination means
Assignee: Sagem SA
•
Filing: 1946-06-18
•
Granted: 1950-02-07
•
Expires: 1966-06-18
Abstract
No abstract record available.
Inventors
- 👤 Pasquet Henri Marcel Edmond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:48
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/14; G03B21/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1355805A
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US1594936A
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US1430494A
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US1750931A
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US1842855A
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US1853689A
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US1996920A
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US2195392A
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US2187071A
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US2155248A
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US2409328A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-06 | 1953-08-08 | 1954-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-06 | 1957-08-08 | 1958-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-06 | 1961-08-08 | 1962-02-07 | $7700.00 | Window Closed / Lapsed |