US2959680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable collimator for radiation therapy
Assignee: Picker X Ray Corp
•
Filing: 1956-03-28
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Granted: 1960-11-08
•
Expires: 1976-03-28
Abstract
No abstract record available.
Inventors
- 👤 Donald T Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:53
CPC Classifications
G; G21; G21K; G21K1/00; G21K1/02; G21K1/04; A; A61; A61N; A61N5/00; A61N5/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1909118A
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US1976179A
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US2187246A
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US2181620A
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US2614224A
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US2544779A
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US2542196A
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US2675486A
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US2844736A
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US2881329A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-08 | 1964-05-09 | 1964-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-08 | 1968-05-09 | 1968-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-08 | 1972-05-09 | 1972-11-08 | $7700.00 | Window Closed / Lapsed |