US2488008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drain valve for laundry tubs
Assignee: Individual
•
Filing: 1947-01-02
•
Granted: 1949-11-15
•
Expires: 1967-01-02
Abstract
No abstract record available.
Inventors
- 👤 George W Ellwanger
- 👤 Gomer T Layton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:45
CPC Classifications
F; F16; F16K; F16K19/00; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86815; Y10T137/86823
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE141525C
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US499781A
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US515466A
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US560388A
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US1553299A
Cited
US812826A
Cited
US1666583A
Cited
AU1572028A
Cited
US1894407A
Cited
US2256891A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-14 | 1953-05-16 | 1953-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-14 | 1957-05-16 | 1957-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-14 | 1961-05-16 | 1961-11-15 | $7700.00 | Window Closed / Lapsed |