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US2952256A
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US
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Epidural needle
Assignee: Sierra Engineering Co
•
Filing: 1957-12-06
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Granted: 1960-09-13
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Expires: 1977-12-06
Abstract
No abstract record available.
Inventors
- 👤 Meader T John
- 👤 Bloom Aaron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:57
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/34; A61B17/3401
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR605067A
Cited
US2630803A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |