Patent US2918315A successfully refreshed from Google Patents.
US2918315A
Expired / Lapsed
US
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Shrink ring tool joint
Assignee: Reed Roller Bit Co
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Filing: 1956-10-10
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Granted: 1959-12-22
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Expires: 1976-10-10
Abstract
No abstract record available.
Inventors
- 👤 Robert G Peter
- 👤 Elvin G Boice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:29
CPC Classifications
F; F16; F16L; F16L15/00; F16L15/001; F16L15/003; E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US745842A
Cited
US1859809A
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US2121035A
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US2535320A
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US2539057A
Cited
US2711912A
Cited
US2653211A
Cited
US2792241A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-21 | 1963-06-22 | 1963-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-21 | 1967-06-22 | 1967-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-21 | 1971-06-22 | 1971-12-22 | $7700.00 | Window Closed / Lapsed |