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US2426531A
Expired / Lapsed
US
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Wall cleaner
Assignee: Individual
•
Filing: 1945-06-04
•
Granted: 1947-08-26
•
Expires: 1965-06-04
Abstract
No abstract record available.
Inventors
- 👤 Stevason Orville
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:57
CPC Classifications
A; A47; A47L; A47L1/00; A47L1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1111499A
Cited
US1203308A
Cited
US1266360A
Cited
US1278626A
Cited
US1999462A
Cited
US2287477A
Cited
US2335623A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-25 | 1951-02-24 | 1951-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-25 | 1955-02-24 | 1955-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-25 | 1959-02-24 | 1959-08-26 | $7700.00 | Window Closed / Lapsed |