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US2976418A
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US
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Gamma-compensated ionization chamber
Assignee: Individual
•
Filing: 1957-11-22
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Granted: 1961-03-21
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Expires: 1977-11-22
Abstract
No abstract record available.
Inventors
- 👤 Leslie E Johnson
- 👤 Sts Kilpatrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:58
CPC Classifications
H; H01; H01J; H01J47/00; H01J47/12; H01J47/1205; H01J47/1211; H01J47/1216
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-20 | 1964-09-19 | 1965-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-20 | 1968-09-19 | 1969-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-20 | 1972-09-19 | 1973-03-21 | $7700.00 | Window Closed / Lapsed |