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Patent US2639456A successfully refreshed from Google Patents.
US2639456A
Expired / Lapsed
US
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Handle assembly for vacuum cleaners
Assignee: Singer Co
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Filing: 1947-10-24
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Granted: 1953-05-26
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Expires: 1967-10-24
Abstract
No abstract record available.
Inventors
- 👤 Floyd T Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:56
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/26; A47L9/32; A47L9/325
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US91145A
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US1102000A
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US1897087A
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FR697720A
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US1921288A
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US1923689A
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US2085042A
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US2370907A
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US2342912A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-25 | 1956-11-24 | 1957-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-25 | 1960-11-24 | 1961-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-25 | 1964-11-24 | 1965-05-26 | $7700.00 | Window Closed / Lapsed |