US2781104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sleeve filter plant
Assignee: Georg Fischer AG
•
Filing: 1954-01-05
•
Granted: 1957-02-12
•
Expires: 1974-01-05
Abstract
No abstract record available.
Inventors
- 👤 Fischer Georg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:04
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/02; B01D46/04; B01D46/0002; B01D46/0004; B01D46/0005; B01D46/42; B01D46/4272; B01D46/66; B01D46/74; B01D46/76; B01D50/00; B01D50/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR445994A
Cited
FR17899E
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US1512776A
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US1791102A
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GB332475A
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FR758640A
Cited
US2143664A
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DE699348C
Cited
US2167236A
Cited
US2335315A
Cited
US2519082A
Cited
US2667233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-12 | 1960-08-13 | 1961-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-12 | 1964-08-13 | 1965-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-12 | 1968-08-13 | 1969-02-12 | $7700.00 | Window Closed / Lapsed |