US2553228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewage disposal plant
Assignee: Individual
•
Filing: 1945-04-09
•
Granted: 1951-05-15
•
Expires: 1965-04-09
Abstract
No abstract record available.
Inventors
- 👤 Yonner Andre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:58
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/28; C02F3/2866; C02F3/288
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB190316468A
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US1339561A
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US2200580A
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US2073441A
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US2168208A
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US2141979A
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US2308866A
Cited
GB521676A
Cited
GB541560A
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US2340848A
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US2340842A
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US2355760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |