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US2582774A
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Method and apparatus for calibration of x-ray gauges
Assignee: X RAY ELECTRONIC CORP
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Filing: 1947-10-04
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Granted: 1952-01-15
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Expires: 1967-10-04
Abstract
No abstract record available.
Inventors
- 👤 Fua Frederic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:37
CPC Classifications
G; G01; G01B; G01B15/00; G01B15/02; G01B15/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2097760A
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US2094318A
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US2136116A
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GB546095A
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US2332422A
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US2469206A
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US2467812A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-14 | 1955-07-16 | 1956-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-14 | 1959-07-16 | 1960-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-14 | 1963-07-16 | 1964-01-15 | $7700.00 | Window Closed / Lapsed |