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Patent US2497939A successfully refreshed from Google Patents.
US2497939A
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Oil projecting device
Assignee: Standard Oil Development Co
•
Filing: 1945-07-14
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Granted: 1950-02-21
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Expires: 1965-07-14
Abstract
No abstract record available.
Inventors
- 👤 George H Garraway
- 👤 Norval F Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:00
CPC Classifications
F; F41; F41H; F41H9/00; F41H9/02; A; A01; A01M; A01M15/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1702298A
Cited
US668787A
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GB191517696A
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GB191518119A
Cited
US1220103A
Cited
US1340012A
Cited
AU2059234A
Cited
CH215428A
Cited
US2369326A
Cited
US2417981A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-20 | 1953-08-22 | 1954-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-20 | 1957-08-22 | 1958-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-20 | 1961-08-22 | 1962-02-21 | $7700.00 | Window Closed / Lapsed |