Patent US2814522A successfully refreshed from Google Patents.
US2814522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connector-hook
Assignee: WEB WILSON OIL TOOLS Inc
•
Filing: 1952-11-12
•
Granted: 1957-11-26
•
Expires: 1972-11-12
Abstract
No abstract record available.
Inventors
- 👤 Melvin J Palmer
- 👤 William A Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:51
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/02; E21B19/04; B; B66; B66C; B66C1/00; B66C1/10; B66C1/22; B66C1/34; F; F16; F16B; F16B45/00; F16B45/02; F16B45/024; F16B45/026
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2486418A
Cited
US1086609A
Cited
US1667957A
Cited
US2331341A
Cited
GB599385A
Cited
US2506593A
Cited
US2559999A
Cited
US2519288A
Cited
US2568939A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-25 | 1961-05-27 | 1961-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-25 | 1965-05-27 | 1965-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-25 | 1969-05-27 | 1969-11-26 | $7700.00 | Window Closed / Lapsed |