US2925878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mist extractor with safety by-pass
Assignee: DELTA TANK Manufacturing CO Inc
•
Filing: 1957-04-08
•
Granted: 1960-02-23
•
Expires: 1977-04-08
Abstract
No abstract record available.
Inventors
- 👤 Delroy O Spann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:43
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/02; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7847; Y10T137/7849; Y10T137/7904; Y10T137/7908; Y10T137/7921; Y10T137/8593; Y10T137/87265; Y10T137/87338; Y10T137/87362
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US145534A
Cited
US573342A
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US1195983A
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US1506967A
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US1652309A
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US1912235A
Cited
US1821082A
Cited
US2614654A
Cited
US2850168A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |