Patent US3376146A successfully refreshed from Google Patents.
US3376146A
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Low density cement composition
Assignee: Mobil Oil AS
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Filing: 1964-10-30
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Granted: 1968-04-02
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Expires: 1984-10-30
Abstract
No abstract record available.
Inventors
- 👤 Mitchell Farris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:19
CPC Classifications
C; C04; C04B; C04B14/00; C04B14/02; C04B14/022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2803555A
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US3220863A
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US3117882A
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US3197317A
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US3234035A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-02 | 1971-10-02 | 1972-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-02 | 1975-10-02 | 1976-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-02 | 1979-10-02 | 1980-04-02 | $7700.00 | Window Closed / Lapsed |