US2436159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suction cleaner
Assignee: Hoover Co
•
Filing: 1943-04-26
•
Granted: 1948-02-17
•
Expires: 1963-04-26
Abstract
No abstract record available.
Inventors
- 👤 Louis K Acheson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:15
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/16; A47L9/1683; A47L9/12; A47L9/127; A47L9/1658; A47L9/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US837705A
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US1041589A
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US1507271A
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US1742671A
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GB314513A
Cited
US2026834A
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US2114780A
Cited
FR821004A
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US2233520A
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US2323405A
Cited
US2247472A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-16 | 1951-08-18 | 1952-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-16 | 1955-08-18 | 1956-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-16 | 1959-08-18 | 1960-02-17 | $7700.00 | Window Closed / Lapsed |