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US2670928A
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Bearing assembly for oil well drilling turbines
Assignee: ENGINEERING DEV Co Inc
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Filing: 1949-11-22
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Granted: 1954-03-02
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Expires: 1969-11-22
Abstract
No abstract record available.
Inventors
- 👤 George P Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:48
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/26; E; E21; E21B; E21B4/00; E21B4/003; F16C2352/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1482702A
Cited
US2137328A
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US2165916A
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US2167019A
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US2350364A
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US2320589A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |