Patent US2773557A successfully refreshed from Google Patents.
US2773557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structure for seating vacuum cleaner cover
Assignee: Electrolux AB
•
Filing: 1953-12-10
•
Granted: 1956-12-11
•
Expires: 1973-12-10
Abstract
No abstract record available.
Inventors
- 👤 Engberg Axel Olof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:03
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; A47L9/1427; A47L9/1472
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
CA486673A
Cited
GB190826998A
Cited
US971895A
Cited
GB265965A
Cited
CH129866A
Cited
US2233167A
Cited
GB469379A
Cited
US2322948A
Cited
US2539195A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |