Patent US2533888A successfully refreshed from Google Patents.
US2533888A
Expired / Lapsed
US
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Cleaning or laundry machine
Assignee: Individual
•
Filing: 1943-12-23
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Granted: 1950-12-12
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Expires: 1963-12-23
Abstract
No abstract record available.
Inventors
- 👤 Leo M Kahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:38
CPC Classifications
D; D06; D06F; D06F23/00; Y; Y10; Y10T; Y10T137/00; Y10T137/4891; Y10T137/6416; Y10T137/6606; Y10T137/6851; Y10T137/7039; Y10T137/7722; Y10T137/7837; Y10T137/7869; Y10T137/7875; Y10T137/8593; Y10T137/86348; Y10T137/86372; Y10T137/86389; Y10T137/86445
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |