Patent US2619974A successfully refreshed from Google Patents.
US2619974A
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Reverse flow surge washer
Assignee: Individual
•
Filing: 1946-10-10
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Granted: 1952-12-02
•
Expires: 1966-10-10
Abstract
No abstract record available.
Inventors
- 👤 John H Daley
- 👤 Elmer W Larsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:23
CPC Classifications
A; A47; A47L; A47L15/00; Y; Y10; Y10S; Y10S119/00; Y10S119/01; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/265; Y10T137/2668; Y10T137/2673; Y10T137/2931; Y10T137/3115; Y10T137/3124
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US827494A
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US1472839A
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US1549952A
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US2145540A
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US2035513A
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US2215018A
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US2213069A
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US2390757A
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US2243446A
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US2233852A
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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) | 1955-12-02 | 1956-06-02 | 1956-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-02 | 1960-06-02 | 1960-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-02 | 1964-06-02 | 1964-12-02 | $7700.00 | Window Closed / Lapsed |