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US2449620A
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Filtering device for coffee makers
Assignee: SIEX Co
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Filing: 1944-09-22
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Granted: 1948-09-21
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Expires: 1964-09-22
Abstract
No abstract record available.
Inventors
- 👤 Reichold Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:47
CPC Classifications
A; A47; A47J; A47J31/00; A47J31/04; A47J31/043
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB401322A
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US2171321A
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US2312556A
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US2234678A
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US2300606A
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US2345265A
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US2345262A
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US2370674A
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US2388335A
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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) | 1951-09-21 | 1952-03-22 | 1952-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-21 | 1956-03-22 | 1956-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-21 | 1960-03-22 | 1960-09-21 | $7700.00 | Window Closed / Lapsed |