Patent DE280021C successfully refreshed from Google Patents.
US2560952A
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US
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Quantitative gas measuring
Assignee: RCA Corp
•
Filing: 1949-02-25
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Granted: 1951-07-17
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Expires: 1969-02-25
Abstract
No abstract record available.
Inventors
- 👤 Edward W Herold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:06
CPC Classifications
H; H01; H01J; H01J41/00; H01J41/02; H01J41/04; G; G01; G01L; G01L21/00; G01N; G01N27/00; G01N27/62; H01J9/00; H01J9/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2375280A
Cited
US2454564A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-16 | 1955-01-15 | 1955-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-16 | 1959-01-15 | 1959-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-16 | 1963-01-15 | 1963-07-17 | $7700.00 | Window Closed / Lapsed |