Patent US2522495A successfully refreshed from Google Patents.
US2522495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for installing casing protectors on drill pipes
Assignee: Byron Jackson Co
•
Filing: 1946-02-25
•
Granted: 1950-09-19
•
Expires: 1966-02-25
Abstract
No abstract record available.
Inventors
- 👤 James C Ballagh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:05
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/10; E21B17/12; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/4987; Y10T29/53; Y10T29/53657; Y10T29/53665
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1320378A
Cited
US1965876A
Cited
US2270671A
Cited
US2252692A
Cited
US2320553A
Cited
US2440009A
Cited
US2328771A
Cited
US2334557A
Cited
US2429341A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-18 | 1954-03-20 | 1954-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-18 | 1958-03-20 | 1958-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-18 | 1962-03-20 | 1962-09-19 | $7700.00 | Window Closed / Lapsed |