Patent US2730752A successfully refreshed from Google Patents.
US2730752A
Expired / Lapsed
US
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Nozzle adjustment for suction cleaner
Assignee: Hoover Co
•
Filing: 1950-07-26
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Granted: 1956-01-17
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Expires: 1970-07-26
Abstract
No abstract record available.
Inventors
- 👤 Werner G Seck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:44
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/28; A47L5/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2076390A
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US2070689A
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US2240799A
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US2174560A
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US2335377A
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US2260207A
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US2337936A
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US2389877A
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US2542120A
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US2485363A
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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) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |