US711911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable-grip elevator for casing or tubing.
Assignee: Oil Well Supply Co
•
Filing: 1902-02-03
•
Granted: 1902-10-21
•
Expires: 1922-02-03
Abstract
No abstract record available.
Inventors
- 👤 Charles L Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:18
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/02; E21B19/06; E21B19/07; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17128; Y10T279/17171; Y10T279/17179
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) | 1905-10-20 | 1906-04-21 | 1906-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1909-10-20 | 1910-04-21 | 1910-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1913-10-20 | 1914-04-21 | 1914-10-21 | $7700.00 | Window Closed / Lapsed |