US2524757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning scaled vessels
Assignee: Dow Chemical Co
•
Filing: 1945-05-17
•
Granted: 1950-10-10
•
Expires: 1965-05-17
Abstract
No abstract record available.
Inventors
- 👤 Melvin E Brines
- 👤 Theodore W Sarge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:53
CPC Classifications
F; F28; F28G; F28G9/00; C; C23; C23G; C23G1/00; C23G1/02; C23G1/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US49329A
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US1194542A
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US2228205A
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US1877504A
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US2008839A
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US2344617A
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US2049517A
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US2094479A
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US2338586A
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US2387324A
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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) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |