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Patent US3021028A successfully refreshed from Google Patents.
US3021028A
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US
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Vacuum cleaner structure
Assignee: AKTIEBAOLGET ELECTROLUX
•
Filing: 1958-04-01
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Granted: 1962-02-13
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Expires: 1978-04-01
Abstract
No abstract record available.
Inventors
- 👤 Descarries Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:45
CPC Classifications
A; A47; A47L; A47L9/00; A47L5/00; A47L5/12; A47L5/22; A47L5/36; A47L5/362; A47L9/009; A47L9/10; A47L9/14; A47L9/1427
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1068274A
Cited
US1695183A
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US2088236A
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US2287474A
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US2314666A
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US2562649A
Cited
US2622264A
Cited
US2702325A
Cited
US2826327A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-12 | 1965-08-14 | 1966-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-12 | 1969-08-14 | 1970-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-12 | 1973-08-14 | 1974-02-13 | $7700.00 | Window Closed / Lapsed |