US3054602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for treatment of sewage
Assignee: Individual
•
Filing: 1958-05-05
•
Granted: 1962-09-18
•
Expires: 1978-05-05
Abstract
No abstract record available.
Inventors
- 👤 Chester F Produman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:55
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/1205; C02F3/121; C02F3/26; C02F2303/00; C02F2303/12; Y; Y02; Y02W; Y02W10/00; Y02W10/10; Y10; Y10S; Y10S261/00; Y10S261/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US662211A
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US1044175A
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US1286017A
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US1602052A
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US1732921A
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US2083347A
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GB450422A
Cited
US2188847A
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US2216664A
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US2666740A
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US2719032A
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GB743697A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-17 | 1966-03-19 | 1966-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-17 | 1970-03-19 | 1970-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-17 | 1974-03-19 | 1974-09-18 | $7700.00 | Window Closed / Lapsed |