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US3491519A
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US
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Vacuum cleaner
Assignee: Electrolux AB
•
Filing: 1967-10-25
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Granted: 1970-01-27
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Expires: 1987-10-25
Abstract
No abstract record available.
Inventors
- 👤 Ian Geoffrey Ettridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:53
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; A47L9/1427; A47L5/00; A47L5/12; A47L5/22; A47L5/28; A47L5/30; A47L9/1436; A47L9/1445; A47L9/1454
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-26 | 1973-07-28 | 1974-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-26 | 1977-07-28 | 1978-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-26 | 1981-07-28 | 1982-01-27 | $7700.00 | Window Closed / Lapsed |