US2919692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertebral trephine biopsy instruments
Assignee: Individual
•
Filing: 1956-02-23
•
Granted: 1960-01-05
•
Expires: 1976-02-23
Abstract
No abstract record available.
Inventors
- 👤 Ackermann Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:16
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/0233; A61B10/025; A61B17/00; A61B17/16; A61B17/1662; A61B17/1671; A61B17/1637; A61B17/34; A61B17/3417; A61B17/3421
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190109732A
Cited
US1014128A
Cited
US1123730A
Cited
US1867624A
Cited
US2426535A
Cited
US2496111A
Cited
US2642872A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |