US2585440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water sealed air washer
Assignee: Individual
•
Filing: 1949-07-11
•
Granted: 1952-02-12
•
Expires: 1969-07-11
Abstract
No abstract record available.
Inventors
- 👤 Daniel T Collins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:42
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/06; B01D47/02; B01D47/025; B01D47/027; Y; Y10; Y10S; Y10S159/00; Y10S159/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US283025A
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GB191123921A
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US1793620A
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US1718988A
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US2171574A
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US2090994A
Cited
US2195707A
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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) | 1955-02-11 | 1955-08-13 | 1956-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-11 | 1959-08-13 | 1960-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-11 | 1963-08-13 | 1964-02-12 | $7700.00 | Window Closed / Lapsed |