US2860725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanism in the cover of a vacuum cleaner for rendering the cleaner inoperative if no bag is in place
Assignee: Electrolux Corp
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Filing: 1956-11-29
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Granted: 1958-11-18
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Expires: 1976-11-29
Abstract
No abstract record available.
Inventors
- 👤 Allen P Cawl
- 👤 John J Kowalewski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:41
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; A47L9/1427; A47L9/1472; A47L9/19; A47L9/28; A47L9/2836; A47L9/2842; A47L9/2889; Y; Y10; Y10S; Y10S292/00; Y10S292/65
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |