US1405783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preventing the deposition of scale or sludge from the cooling water in surface steam condensers
Assignee: MASCHINENBAU-AKTIENGESELLSCHAFT BALCKE
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Filing: 1919-05-28
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Granted: 1922-02-07
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Expires: 1939-05-28
Abstract
No abstract record available.
Inventors
- 👤 Holle August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:04
CPC Classifications
C; C02; C02F; C02F5/00; C02F5/08
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) | 1925-02-06 | 1925-08-08 | 1926-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-02-06 | 1929-08-08 | 1930-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-02-06 | 1933-08-08 | 1934-02-07 | $7700.00 | Window Closed / Lapsed |