Patent US4170735A successfully refreshed from Google Patents.
US2813596A
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US
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Disposable filter bag
Assignee: Kimberly Clark Corp
•
Filing: 1953-12-02
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Granted: 1957-11-19
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Expires: 1973-12-02
Abstract
No abstract record available.
Inventors
- 👤 Edward H Voigtman
- 👤 Richard A Wolterding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:42
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US754053A
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US1368540A
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US1411975A
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GB257711A
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US1897976A
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US1854427A
Cited
GB512945A
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GB527228A
Cited
US2225389A
Cited
US2324231A
Cited
US2463722A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |