US2591567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner
Assignee: Electrolux Corp
•
Filing: 1948-05-29
•
Granted: 1952-04-01
•
Expires: 1968-05-29
Abstract
No abstract record available.
Inventors
- 👤 Lofgren Gustaf Einar
- 👤 Peterson Axel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:57
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1389909A
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GB189809953A
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GB368731A
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US2368787A
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US2400217A
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US2443162A
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US2500832A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |