US2302224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means and method of testing oil
Assignee: HARRY C VANDEWATER
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Filing: 1939-08-07
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Granted: 1942-11-17
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Expires: 1959-08-07
Abstract
No abstract record available.
Inventors
- 👤 Jones Alexander Houston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:03
CPC Classifications
G; G01; G01N; G01N11/00; G01N11/02; G01N21/00; G01N21/84; G01N21/88; G01N21/8803; G01N33/00; G01N33/26; G01N33/28; G01N33/2888; G01N35/00; G01N35/10; G01N2035/1027; G01N2035/1034; G01N2035/1037
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) | 1945-11-16 | 1946-05-18 | 1946-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-11-16 | 1950-05-18 | 1950-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-11-16 | 1954-05-18 | 1954-11-17 | $7700.00 | Window Closed / Lapsed |