Patent US2856628A successfully refreshed from Google Patents.
US2856628A
Expired / Lapsed
US
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Handle controlled suction cleaner nozzle adjustment
Assignee: Hoover Co
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Filing: 1955-03-30
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Granted: 1958-10-21
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Expires: 1975-03-30
Abstract
No abstract record available.
Inventors
- 👤 John E Vance
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:08
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)
US1286115A
Cited
US1421957A
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US1642518A
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US1937765A
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US2202979A
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US2243985A
Cited
US2325796A
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US2671924A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |