Patent US2580435A successfully refreshed from Google Patents.
US2580435A
Expired / Lapsed
US
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Washing machine
Assignee: Apex Electrical Manufacturing Co
•
Filing: 1947-01-29
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Granted: 1952-01-01
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Expires: 1967-01-29
Abstract
No abstract record available.
Inventors
- 👤 James B Kirby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:22
CPC Classifications
D; D06; D06F; D06F37/00; D06F37/20; D06F37/24; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2109
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US302186A
Cited
US373577A
Cited
US1785578A
Cited
US2091536A
Cited
US2106832A
Cited
US2138501A
Cited
US2350218A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |