US2781454A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotational therapy unit
Assignee: Atomic Energy of Canada Ltd AECL
•
Filing: 1953-11-30
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Granted: 1957-02-12
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Expires: 1973-11-30
Abstract
No abstract record available.
Inventors
- 👤 Donald T Green
- 👤 Carl B Braestrup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:31
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/44; A61B6/4429; A61B6/4435; A61B6/4441; A61N; A61N5/00; A61N5/01; G; G21; G21K; G21K5/00; G21K5/10
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) | 1960-02-12 | 1960-08-13 | 1961-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-12 | 1964-08-13 | 1965-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-12 | 1968-08-13 | 1969-02-12 | $7700.00 | Window Closed / Lapsed |