US3300643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoluminescent radiation dosimeter readout apparatus using nitrogen gas in the readout chamber
Assignee: Controls for Radiation Inc
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Filing: 1963-12-13
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Granted: 1967-01-24
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Expires: 1983-12-13
Abstract
No abstract record available.
Inventors
- 👤 Richard C Mccall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:01
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/02; G01T1/10; G01T1/11; G01T1/115
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
67 words
APPARATUS FOR READING OUT THERMOLUMINESCENT DOSIMETERS OF LITHIUM FLUORIDE CRYSTALS COMPRISING A CHAMBER, A RADIATION SENSOR DISPOSED IN SCANNING RELATION TO SAID CHAMBER, A SOURCE OF PURE NITROGEN, MEANS COUPLING SAID SOURCE TO SAID CHAMBER, VALVE MEANS IN SAID COUPLING MEANS FOR CONTROLLING THE FLOW OF NITROGEN TO SAID CHAMBER, TWO SETS OF SPACED ELECTRICAL CONTACTS IN SAID CHAMBER, PLANCHET SUPPORT MEANS FOR POSITIONING A HIGH RESISTANCE
References Cited (Backward Citations)
US3115578A
Cited
US3141973A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |