US2769995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Household sponge cleaning device
Assignee: Individual
•
Filing: 1954-03-10
•
Granted: 1956-11-13
•
Expires: 1974-03-10
Abstract
No abstract record available.
Inventors
- 👤 Klein Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:25
CPC Classifications
A; A47; A47L; A47L1/00; A47L1/06; A47L13/00; A47L13/10; A47L13/20; A47L13/24; A47L13/254; A47L13/257
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-13 | 1960-05-14 | 1960-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-13 | 1964-05-14 | 1964-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-13 | 1968-05-14 | 1968-11-13 | $7700.00 | Window Closed / Lapsed |