US2668979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner nozzle with detachable brush carrying unit
Assignee: Scott Fetzer Co
•
Filing: 1949-10-29
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Granted: 1954-02-16
•
Expires: 1969-10-29
Abstract
No abstract record available.
Inventors
- 👤 Charles H Macfarland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:23
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02; A47L9/04; A47L9/0427; A47L9/0444
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1309092A
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US1332235A
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US1726592A
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US2092581A
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US1995630A
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US2192397A
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US2233762A
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US2312781A
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GB620771A
Cited
US2538464A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-15 | 1957-08-17 | 1958-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-15 | 1961-08-17 | 1962-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-15 | 1965-08-17 | 1966-02-16 | $7700.00 | Window Closed / Lapsed |