US2518845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deaerator and corrosion control equipment
Assignee: E A KENT
•
Filing: 1945-05-05
•
Granted: 1950-08-15
•
Expires: 1965-05-05
Abstract
No abstract record available.
Inventors
- 👤 Philip H Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:16
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/0042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB157789A
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US1849900A
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US2018901A
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US2376794A
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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) | 1953-08-14 | 1954-02-13 | 1954-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-14 | 1958-02-13 | 1958-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-14 | 1962-02-13 | 1962-08-15 | $7700.00 | Window Closed / Lapsed |