US2477815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for purifying wastes
Assignee: Individual
•
Filing: 1945-07-18
•
Granted: 1949-08-02
•
Expires: 1965-07-18
Abstract
No abstract record available.
Inventors
- 👤 Edward B Mallory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:44
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/1205; C02F3/1221; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB218399A
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US1904916A
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US1820977A
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US2089162A
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US2118266A
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US2254953A
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US2270869A
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US2337507A
Cited
US2378756A
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US2363176A
Cited
US2349390A
Cited
US2388795A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-01 | 1953-01-31 | 1953-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-01 | 1957-01-31 | 1957-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-01 | 1961-01-31 | 1961-08-02 | $7700.00 | Window Closed / Lapsed |