Patent US2677880A successfully refreshed from Google Patents.
US2677880A
Expired / Lapsed
US
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Drill pipe protector applicator
Assignee: Tuboscope Co
•
Filing: 1950-02-17
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Granted: 1954-05-11
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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 10:56
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
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References Cited (Backward Citations)
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US1409266A
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US1580627A
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US2263638A
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US2228229A
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US2252692A
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US2304634A
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US2327088A
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US2328771A
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US2334558A
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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 |