US2417688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewage clarifier
Assignee: Yeomans Brothers Co
•
Filing: 1943-09-30
•
Granted: 1947-03-18
•
Expires: 1963-09-30
Abstract
No abstract record available.
Inventors
- 👤 Harold T Jeffery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:43
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/24; B01D21/2405; B01D21/2416; B01D21/0003; B01D21/0039; B01D21/0042; B01D21/10; B01D21/12; B01D21/14; B01D21/18; B01D21/20; B01D21/2427; B01D21/2433; B01D21/2438; B01D21/245
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1007954A
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US1530659A
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US1650820A
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US1828794A
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GB370665A
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US1990458A
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US1972584A
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US2103796A
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GB421479A
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US2101080A
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US2052676A
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US2078266A
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US2149313A
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US2086730A
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US2067105A
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US2126884A
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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) | 1950-03-17 | 1950-09-16 | 1951-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-17 | 1954-09-16 | 1955-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-17 | 1958-09-16 | 1959-03-18 | $7700.00 | Window Closed / Lapsed |