Patent US651921A successfully refreshed from Google Patents.
US651921A
Expired / Lapsed
US
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Trephine.
Assignee: Individual
•
Filing: 1900-03-08
•
Granted: 1900-06-19
•
Expires: 1920-03-08
Abstract
No abstract record available.
Inventors
- 👤 Allen De Vilbiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:25
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/16; A61B17/1695; Y; Y10; Y10T; Y10T408/00; Y10T408/89; Y10T408/902
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1903-06-19 | 1903-12-19 | 1904-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1907-06-19 | 1907-12-19 | 1908-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1911-06-19 | 1911-12-19 | 1912-06-19 | $7700.00 | Window Closed / Lapsed |