Patent US2538464A successfully refreshed from Google Patents.
US2538464A
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US
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Detachable mounting for vacuum cleaner nozzles with power-driven brush
Assignee: Scott Fetzer Co
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Filing: 1945-10-02
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Granted: 1951-01-16
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Expires: 1965-10-02
Abstract
No abstract record available.
Inventors
- 👤 Charles H Macfarland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:00
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/28; A47L5/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1332235A
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US1400448A
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US1596446A
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US1726592A
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US1900692A
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US1965787A
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US2166863A
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US2094138A
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US2375212A
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US2322223A
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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) | 1954-01-15 | 1954-07-17 | 1955-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-15 | 1958-07-17 | 1959-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-15 | 1962-07-17 | 1963-01-16 | $7700.00 | Window Closed / Lapsed |