US2677880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill pipe protector applicator
Assignee: Tuboscope Co
•
Filing: 1950-02-17
•
Granted: 1954-05-11
•
Expires: 1970-02-17
Abstract
No abstract record available.
Inventors
- 👤 Lester W Ballard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:38
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/10; E21B17/12; Y; Y10; Y10T; Y10T29/00; 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)
US113049A
Cited
US1409266A
Cited
US1580627A
Cited
US2263638A
Cited
US2228229A
Cited
US2252692A
Cited
US2304634A
Cited
US2327088A
Cited
US2328771A
Cited
US2334558A
Cited
US2504406A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-10 | 1957-11-09 | 1958-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-10 | 1961-11-09 | 1962-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-10 | 1965-11-09 | 1966-05-11 | $7700.00 | Window Closed / Lapsed |