Patent US3423907A successfully refreshed from Google Patents.
US3423907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
End closure for disposable dust bag
Assignee: Electrolux AB
•
Filing: 1965-08-27
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Granted: 1969-01-28
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Expires: 1985-08-27
Abstract
No abstract record available.
Inventors
- 👤 George Leslie Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:11
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; A47L9/1427; A47L9/1436; A47L9/1445; A47L9/1454
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2070674A
Cited
US2225389A
Cited
US2649926A
Cited
US3108736A
Cited
US2848062A
Cited
US2961063A
Cited
US3237846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |