Patent US2870468A successfully refreshed from Google Patents.
US2870468A
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Rotary cleaning brush attachment for suction cleaning devices
Assignee: RUDOLF BLIK ELECTRISCHE APP N
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Filing: 1952-09-20
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Granted: 1959-01-27
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Expires: 1972-09-20
Abstract
No abstract record available.
Inventors
- 👤 Barel Cornelis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:13
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4036; A47L11/4038; A47L11/02; A47L11/20; A47L11/204; A47L11/206; A47L11/2065; A47L11/4063; A47L11/4069; A47L11/4094
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1797119A
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US1954066A
Cited
GB379829A
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US2113475A
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US2257339A
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US2347919A
Cited
US2487470A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |