Patent US1585632A successfully refreshed from Google Patents.
US1585632A
Expired / Lapsed
US
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Sediment remover for boilers
Assignee: AMERICAN BOILER WASHING DEVICE
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Filing: 1924-02-16
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Granted: 1926-05-18
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Expires: 1944-02-16
Abstract
No abstract record available.
Inventors
- 👤 Elza L Isaacs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:22
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/02; F22B37/48; F22B37/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1929-05-17 | 1929-11-16 | 1930-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-05-17 | 1933-11-16 | 1934-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-05-17 | 1937-11-16 | 1938-05-18 | $7700.00 | Window Closed / Lapsed |