Patent US2819091A successfully refreshed from Google Patents.
US2819091A
Expired / Lapsed
US
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Vacuum cleaner dolly
Assignee: Electrolux Corp
•
Filing: 1953-06-29
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Granted: 1958-01-07
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Expires: 1973-06-29
Abstract
No abstract record available.
Inventors
- 👤 Robert C Lampe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:51
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/009; A47L5/00; A47L5/12; A47L5/22; A47L5/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US828232A
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US1234775A
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US1357117A
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US1456335A
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US1765985A
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US1947154A
Cited
US2177588A
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US2236331A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |