US2869170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner attachment
Assignee: Individual
•
Filing: 1953-06-26
•
Granted: 1959-01-20
•
Expires: 1973-06-26
Abstract
No abstract record available.
Inventors
- 👤 Wessel Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:35
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02; A47L9/06; A47L9/0606; A47L9/0613
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE516121A
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GB190120178A
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GB191109019A
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US1770195A
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US2221630A
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US2216275A
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US2235224A
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US2531370A
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BE515469A
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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) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |