US3253148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Proton source of gamma radiation for well logging
Assignee: Dresser Industries Inc
•
Filing: 1961-12-06
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Granted: 1966-05-24
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Expires: 1981-12-06
Abstract
No abstract record available.
Inventors
- 👤 Robert E Fearon
- 👤 Jean M Thayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:28
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/08; G01V5/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
50 words
A GAMMA RAY SOURCE COMPRISING A HOUSING THE INTERIOR OF WHICH IS MAINTAINED AT STATIC PRESSURE, A LITHIUM TARGET DISPOSED IN SAID HOUSING, A SOURCE OF PROTONS ALSO DISPOSED IN SAID HOUSING, AND MEANS FOR ACCELERATING SAID PROTONS TO BOMBARD SAID TARGET TO PRODUCE SEVENTEEN MILLION ELECTRON VOLT GAMMA RAYS.
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) | 1969-05-23 | 1969-11-22 | 1970-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-23 | 1973-11-22 | 1974-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-23 | 1977-11-22 | 1978-05-24 | $7700.00 | Window Closed / Lapsed |