US2644190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suction cleaner casing assembly
Assignee: Hoover Co
•
Filing: 1949-02-25
•
Granted: 1953-07-07
•
Expires: 1969-02-25
Abstract
No abstract record available.
Inventors
- 👤 Ralph L Brown
- 👤 John E Vance
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:00
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/28; A47L5/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1556021A
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US1806177A
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GB452409A
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US2134396A
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US2322921A
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GB526925A
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US2244165A
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US2340379A
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GB568958A
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FR918976A
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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) | 1956-07-06 | 1957-01-05 | 1957-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-06 | 1961-01-05 | 1961-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-06 | 1965-01-05 | 1965-07-07 | $7700.00 | Window Closed / Lapsed |