Patent US3226758A successfully refreshed from Google Patents.
US3226758A
Expired / Lapsed
US
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Vacuum cleaners
Assignee: Electrolux Corp
•
Filing: 1963-05-24
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Granted: 1966-01-04
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Expires: 1983-05-24
Abstract
No abstract record available.
Inventors
- 👤 Raymond L Brown
- 👤 David F Downey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:04
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/24; A47L5/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2192224A
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US2686330A
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US2769997A
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US2789660A
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US2910717A
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US3083396A
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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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |