US2854686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable vacuum cleaner structure
Assignee: Whirlpool Corp
•
Filing: 1955-02-09
•
Granted: 1958-10-07
•
Expires: 1975-02-09
Abstract
No abstract record available.
Inventors
- 👤 Clarence E Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:16
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/009
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1748853A
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US2152756A
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US2304014A
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US2327553A
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US2295984A
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US2340390A
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US2388280A
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US2390101A
Cited
US2634189A
Cited
US2716253A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |