Patent US2608709A successfully refreshed from Google Patents.
US2608709A
Expired / Lapsed
US
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Suction cleaner adapted to carry cleaner tools
Assignee: Air Way Electric Appliance Corp
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Filing: 1947-08-12
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Granted: 1952-09-02
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Expires: 1967-08-12
Abstract
No abstract record available.
Inventors
- 👤 Cordelia P Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:11
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/0009; A47L9/0018; A47L9/0027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US978167A
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FR550658A
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US1787646A
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FR637490A
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FR672668A
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FR704192A
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US2042387A
Cited
US2177153A
Cited
US2355034A
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US2313423A
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CH244822A
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DK61996A
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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) | 1955-09-02 | 1956-03-03 | 1956-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-02 | 1960-03-03 | 1960-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-02 | 1964-03-03 | 1964-09-02 | $7700.00 | Window Closed / Lapsed |