Patent US2191338A successfully refreshed from Google Patents.
US2191338A
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Stabilized mineral oil
Assignee: General Electric Co
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Filing: 1938-07-07
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Granted: 1940-02-20
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Expires: 1958-07-07
Abstract
No abstract record available.
Inventors
- 👤 Frank M Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:17
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; H; H01; H01B; H01B3/00; H01B3/18; H01B3/20; H01B3/22; C10M2205/00; C10M2205/18; C10M2209/00; C10M2209/02; C10M2209/10; C10N; C10N2040/00; C10N2040/14; C10N2040/16; C10N2040/17; C10N2060/00; C10N2060/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-02-19 | 1943-08-21 | 1944-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-02-19 | 1947-08-21 | 1948-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-02-19 | 1951-08-21 | 1952-02-20 | $7700.00 | Window Closed / Lapsed |