US2458632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ionization chamber
Assignee: Individual
•
Filing: 1945-12-11
•
Granted: 1949-01-11
•
Expires: 1965-12-11
Abstract
No abstract record available.
Inventors
- 👤 Parsons J Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:34
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/185
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1961717A
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US2033274A
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US2105305A
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US2178985A
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US2206638A
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US2288718A
Cited
US2302247A
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US2282319A
Cited
US2397074A
Cited
US2368486A
Cited
US2379168A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-11 | 1952-07-12 | 1953-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-11 | 1956-07-12 | 1957-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-11 | 1960-07-12 | 1961-01-11 | $7700.00 | Window Closed / Lapsed |