US2686268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well logging device
Assignee: Individual
•
Filing: 1951-08-10
•
Granted: 1954-08-10
•
Expires: 1971-08-10
Abstract
No abstract record available.
Inventors
- 👤 Philip W Martin
- 👤 Pringle Robert William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:32
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/08; G01V5/10; G01V5/101
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A WELL EXPLORING DEVICE CAPABLE OF DETECTING RADIATIONS FROM THE EARTH, COMPRISING: A CRYSTAL CAPABLE OF SCINTILLATING UNDER THE EFFECT OF SAID RADIATIONS; MEANS FOR MULTIPLYING AND DETECTING AN EFFECT OF THE SCINTILLATIONS FROM SAID CRYSTALS; AND SURFACE MEANS FOR DISCRIMINATING AND INDICATING THE PULSE HEIGHTS OF SAID SCINTILLATIONS, WHEREBY AN ANALYSIS MAY BE MADE OF ENERGY SPECTRUM OF THE RADIATIONS.
Claim 2
Dependent Claim
61 words
A WELL EXPLORING DEVICE CAPABLE OF DETECTING RADIATIONS FROM THE EARTH, COMPRISING: A CRYSTAL CAPABLE OF SCINTILLATING UNDER THE EFFECT OF SAID RADIATIONS; MEANS FOR MULTIPLYING AND DETECTING AN EFFECT OF THE SCINTILLATIONS FROM SAID CRYSTALS; AND SURFACE MEANS FOR DISCRIMINATING AND INDICATING THE PULSE HEIGHTS OF SAID SCINTILLATIONS, WHEREBY AN ANALYSIS MAY BE MADE OF ENERGY SPECTRUM OF THE RADIATIONS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-09 | 1958-02-08 | 1958-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-09 | 1962-02-08 | 1962-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-09 | 1966-02-08 | 1966-08-10 | $7700.00 | Window Closed / Lapsed |