Patent US2566684A successfully refreshed from Google Patents.
US2566684A
Expired / Lapsed
US
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Segmented ionization chamber
Assignee: Individual
•
Filing: 1950-11-02
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Granted: 1951-09-04
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Expires: 1970-11-02
Abstract
No abstract record available.
Inventors
- 👤 Cornelius A Tobias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:06
CPC Classifications
H; H01; H01J; H01J47/00; H01J47/02; G; G01; G01T; G01T1/00; G01T1/29
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2195098A
Cited
US2459724A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-03 | 1955-03-05 | 1955-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-03 | 1959-03-05 | 1959-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-03 | 1963-03-05 | 1963-09-04 | $7700.00 | Window Closed / Lapsed |