Patent US2642616A successfully refreshed from Google Patents.
US2642616A
Expired / Lapsed
US
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Reverse air flow convertible household vacuum cleaner
Assignee: Individual
•
Filing: 1949-05-07
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Granted: 1953-06-23
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Expires: 1969-05-07
Abstract
No abstract record available.
Inventors
- 👤 Archie S Browne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:02
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/36; A47L5/362; A47L5/24; A47L5/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1167219A
Cited
GB280118A
Cited
US2155669A
Cited
US2097469A
Cited
US2269482A
Cited
US2355322A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |