Patent US2670443A successfully refreshed from Google Patents.
US2670443A
Expired / Lapsed
US
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Radiation beam forming unit
Assignee: Tracerlab Inc
•
Filing: 1951-02-28
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Granted: 1954-02-23
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Expires: 1971-02-28
Abstract
No abstract record available.
Inventors
- 👤 John C Pennock
- 👤 Albert J Bacchieri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:35
CPC Classifications
G; G21; G21F; G21F5/00; G21F5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2206634A
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US2224077A
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US2269458A
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US2477648A
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US2594970A
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US2495781A
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US2474422A
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US2484433A
Cited
US2514909A
Cited
US2551491A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |