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US2974256A
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US
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Light sources for the spectro-chemical analysis of substances
Assignee: Centre National de la Recherche Scientifique
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Filing: 1958-04-29
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Granted: 1961-03-07
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Expires: 1978-04-29
Abstract
No abstract record available.
Inventors
- 👤 Romand Jacques Louis
- 👤 Vodar Boris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:58
CPC Classifications
H; H01; H01J; H01J17/00; G; G01; G01N; G01N21/00; G01N21/62; G01N21/66; G01N21/67; H01J61/00; H01J2893/00; H01J2893/0059; H01J2893/0063
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2414363A
Cited
US2541877A
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US2703374A
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US2833963A
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US2818527A
Cited
US2793323A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-06 | 1964-09-05 | 1965-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-06 | 1968-09-05 | 1969-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-06 | 1972-09-05 | 1973-03-07 | $7700.00 | Window Closed / Lapsed |