Patent US2415576A successfully refreshed from Google Patents.
US2415576A
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US
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Electrochemical scale remover and scale and corrosion preventer
Assignee: Individual
•
Filing: 1943-01-16
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Granted: 1947-02-11
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Expires: 1963-01-16
Abstract
No abstract record available.
Inventors
- 👤 Ual J Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:35
CPC Classifications
C; C23; C23F; C23F13/00; C23F13/02; C02; C02F; C02F1/00; C02F1/46; C02F1/461; C02F1/46104; C02F1/46176
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US64992A
Cited
US647409A
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US779326A
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US2204823A
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US2058370A
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US2193667A
Cited
US2328589A
Cited
US2321796A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-10 | 1950-08-12 | 1951-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-10 | 1954-08-12 | 1955-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-10 | 1958-08-12 | 1959-02-11 | $7700.00 | Window Closed / Lapsed |