US2917647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Geiger-muller type counter tube
Assignee: Individual
•
Filing: 1955-08-01
•
Granted: 1959-12-15
•
Expires: 1975-08-01
Abstract
No abstract record available.
Inventors
- 👤 Fowler Ivan Landen
- 👤 Watt Lynn Alexander Keeling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:54
CPC Classifications
H; H01; H01J; H01J47/00; H01J47/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A GEIGER-MULLER TYPE HALOGEN-QUENCHED END-WINDOW COUNTER TUBE COMPRISING A TUBULAR CATHODE HAVING AN INNER SURFACE OF CIRCULAR CROSS SECTION, AN ANODE EXTENDING SUBSTANTIALLY COAXIALLY WITH THE CATHODE, AN ENDWINDOW FITTED TO ONE END OF THE CATHODE, THE SPACING BETWEEN THE OUTER SURFACE OF THE ANODE AND THE INNER SURFACE OF THE CATHODE BEING SUBSTANTIALLY GREATER NEAR THE END OF THE CATHODE FITTED WITH THE SAID END-WINDOW THAN NEAR THE OTHER END OF THE CATHODE, SAID SPACING PROVIDING A LARGE COUNTING VOLUME ADJACENT THE END WINDOW FOR MEASURING LOW RADIATION INTENSITIES AND A SMALL COUNTING VOLUME REMOTE FROM SAID END WINDOW FOR MEASUREMENT OF HIGH INTENSITY RADIATION, MEANS APPLYING AN OPERATING POTENTIAL BETWEEN THE CATHODE AND ANODE ALONG THE FULL LENGTH OF THE CATHODE.
Claim 2
Dependent Claim
123 words
A GEIGER-MULLER TYPE HALOGEN-QUENCHED END-WINDOW COUNTER TUBE COMPRISING A TUBULAR CATHODE HAVING AN INNER SURFACE OF CIRCULAR CROSS SECTION, AN ANODE EXTENDING SUBSTANTIALLY COAXIALLY WITH THE CATHODE, AN ENDWINDOW FITTED TO ONE END OF THE CATHODE, THE SPACING BETWEEN THE OUTER SURFACE OF THE ANODE AND THE INNER SURFACE OF THE CATHODE BEING SUBSTANTIALLY GREATER NEAR THE END OF THE CATHODE FITTED WITH THE SAID END-WINDOW THAN NEAR THE OTHER END OF THE CATHODE, SAID SPACING PROVIDING A LARGE COUNTING VOLUME ADJACENT THE END WINDOW FOR MEASURING LOW RADIATION INTENSITIES AND A SMALL COUNTING VOLUME REMOTE FROM SAID END WINDOW FOR MEASUREMENT OF HIGH INTENSITY RADIATION, MEANS APPLYING AN OPERATING POTENTIAL BETWEEN THE CATHODE AND ANODE ALONG THE FULL LENGTH OF THE CATHODE.
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |