Patent US2675575A successfully refreshed from Google Patents.
US2675575A
Expired / Lapsed
US
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Adjustable agitator for vacuum cleaners
Assignee: Air Way Electric Appliance Corp
•
Filing: 1950-02-11
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Granted: 1954-04-20
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Expires: 1970-02-11
Abstract
No abstract record available.
Inventors
- 👤 Dewey M Dow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:45
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1894905A
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US1296121A
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US1483972A
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US1782308A
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US1753799A
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US1859132A
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US1990710A
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US2153457A
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US2314081A
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US2348861A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-19 | 1957-10-19 | 1958-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-19 | 1961-10-19 | 1962-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-19 | 1965-10-19 | 1966-04-20 | $7700.00 | Window Closed / Lapsed |