Patent US2284698A successfully refreshed from Google Patents.
Patent US893464A successfully refreshed from Google Patents.
US893464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Obstetrical forceps.
Assignee: Individual
•
Filing: 1907-07-02
•
Granted: 1908-07-14
•
Expires: 1927-07-02
Abstract
No abstract record available.
Inventors
- 👤 William B Dewees
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:24
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/42; A61B17/44
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1911-07-14 | 1912-01-13 | 1912-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-07-14 | 1916-01-13 | 1916-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-07-14 | 1920-01-13 | 1920-07-14 | $7700.00 | Window Closed / Lapsed |