Patent US3457575A successfully refreshed from Google Patents.
US3457575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sweeper for carpeted and smooth floors
Assignee: Bissell Inc
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Filing: 1966-11-30
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Granted: 1969-07-29
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Expires: 1986-11-30
Abstract
No abstract record available.
Inventors
- 👤 Gunter Bienek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:15
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4075; A46; A46B; A46B13/00; A46B13/001; A47L11/32; A47L11/33; A47L11/4013; A47L11/4036; A47L11/4041; A47L11/4063; A47L11/4066; A47L11/4069
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) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |