US3540827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring circular dichroism utilizing photoelastic means
Assignee: Centre National de la Recherche Scientifique
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Filing: 1967-05-26
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Granted: 1970-11-17
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Expires: 1987-05-26
Abstract
No abstract record available.
Inventors
- 👤 Jacques Badoz
- 👤 Michel Billardon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:11
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/0128; G02F1/0131; G01; G01N; G01N21/00; G01N21/17; G01N21/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2622470A
Cited
US2707749A
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GB802584A
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US3197694A
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US2976764A
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FR1252209A
Cited
US3257894A
Cited
US3437399A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-16 | 1974-05-18 | 1974-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-16 | 1978-05-18 | 1978-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-16 | 1982-05-18 | 1982-11-17 | $7700.00 | Window Closed / Lapsed |