Patent US3426205A successfully refreshed from Google Patents.
US3426205A
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Method for tagging sand with a gaseous radioactive isotope
Assignee: United States Atomic Energy Commission
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Filing: 1967-09-28
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Granted: 1969-02-04
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Expires: 1987-09-28
Abstract
No abstract record available.
Inventors
- 👤 Elick H Acree
- 👤 Forrest N Case
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:45
CPC Classifications
G; G21; G21H; G21H5/00; G21H5/02; Y; Y10; Y10S; Y10S252/00; Y10S252/965; Y10T; Y10T436/00; Y10T436/13
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-04 | 1972-08-05 | 1973-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-04 | 1976-08-05 | 1977-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-04 | 1980-08-05 | 1981-02-04 | $7700.00 | Window Closed / Lapsed |