US3030790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clothes washing machine with water level control means
Assignee: Whirlpool Corp
•
Filing: 1960-10-11
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Granted: 1962-04-24
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Expires: 1980-10-11
Abstract
No abstract record available.
Inventors
- 👤 Davenport Rodney Bell
- 👤 Woodfin Edward John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:14
CPC Classifications
D; D06; D06F; D06F39/00; D06F39/08; D06F39/087; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/729
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1995318A
Cited
US1995635A
Cited
US2316570A
Cited
US2562772A
Cited
US2909050A
Cited
US2896436A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-23 | 1965-10-23 | 1966-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-23 | 1969-10-23 | 1970-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-23 | 1973-10-23 | 1974-04-24 | $7700.00 | Window Closed / Lapsed |