Patent US2989662A successfully refreshed from Google Patents.
US2989662A
Expired / Lapsed
US
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Radiographic device
Assignee: Fairchild Semiconductor Corp
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Filing: 1958-11-13
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Granted: 1961-06-20
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Expires: 1978-11-13
Abstract
No abstract record available.
Inventors
- 👤 Bernard R Linden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:50
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/49; G; G01; G01N; G01N23/00; G01N23/02; G01N23/06; G01N23/09; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/39; H01J29/45; H01J29/458; Y; Y10; Y10S; Y10S315/00; Y10S315/07
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) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |