US3124687A
Expired / Lapsed
US
⏱️ 0.0 years remaining
figure
Assignee: —
•
Filing: —
•
Granted: 1964-03-10
•
Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:18
CPC Classifications
G; G21; G21K; G21K5/00; G21K5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
THE METHOD OF IRRADIATING MATERIAL WHICH COMPRISES LOWERING A RADIOACTIVE SOURCE INTO A CURVED BORE HOLE IN THE EARTH SO THAT THE STRATA BETWEEN THE SURFACE OF THE EARTH AND THE REGION TO WHICH THE SOURCE IS LOWERED AND THE CURVATURE OF THE BORE HOLE PREVENT DANGEROUS RADIATION FROM REACHING THE SURFACE OF THE EARTH, POSITIONING
Claim 2
Independent Claim
56 words
THE METHOD OF IRRADIATING MATERIAL WHICH COMPRISES LOWERING A RADIOACTIVE SOURCE INTO A CURVED BORE HOLE IN THE EARTH SO THAT THE STRATA BETWEEN THE SURFACE OF THE EARTH AND THE REGION TO WHICH THE SOURCE IS LOWERED AND THE CURVATURE OF THE BORE HOLE PREVENT DANGEROUS RADIATION FROM REACHING THE SURFACE OF THE EARTH, POSITIONING
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US2467136A
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Cited
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Cited
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Cited
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Cited
US2658724A
Cited
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Cited
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Cited
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Cited
US2798164A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-10 | 1967-09-09 | 1968-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-10 | 1971-09-09 | 1972-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-10 | 1975-09-09 | 1976-03-10 | $7700.00 | Window Closed / Lapsed |