US2420927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screening and conveying means for the solids of oil separating tanks
Assignee: Anderson Co V D
•
Filing: 1944-08-26
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Granted: 1947-05-20
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Expires: 1964-08-26
Abstract
No abstract record available.
Inventors
- 👤 Raymond T Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:07
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/38; F16D65/72; F16D65/74; B; B01; B01D; B01D21/00; B01D21/0012; B01D21/009; B01D21/10; B01D21/12; B01D21/24; B01D21/245; C; C11; C11B; C11B3/00; C11B3/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2064792A
Cited
US1231409A
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GB217025A
Cited
US2022661A
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US2233448A
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US2254176A
Cited
US2219007A
Cited
US2309002A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-05-19 | 1950-11-18 | 1951-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-05-19 | 1954-11-18 | 1955-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-05-19 | 1958-11-18 | 1959-05-20 | $7700.00 | Window Closed / Lapsed |