Patent US3502876A successfully refreshed from Google Patents.
US3502876A
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US
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Apparatus for continuous and simultaneous measurement of concentration in the atmosphere of the shortlived solid decay products of radon
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1968-03-25
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Granted: 1970-03-24
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Expires: 1988-03-25
Abstract
No abstract record available.
Inventors
- 👤 Claude Lasseur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:43
CPC Classifications
G; G01; G01T; G01T7/00; G01T7/02; G01T7/04; G01T1/00; G01T1/16; G01T1/17; G01T1/178; G01T1/18; Y; Y10; Y10S; Y10S250/00; Y10S250/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-23 | 1973-09-22 | 1974-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-23 | 1977-09-22 | 1978-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-23 | 1981-09-22 | 1982-03-24 | $7700.00 | Window Closed / Lapsed |