US2779047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner with accessory support
Assignee: Individual
•
Filing: 1953-08-26
•
Granted: 1957-01-29
•
Expires: 1973-08-26
Abstract
No abstract record available.
Inventors
- 👤 Ralph C Osborn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:55
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/36; A47L5/365
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US560447A
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GB191001068A
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US1441913A
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FR774029A
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FR895125A
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US2534122A
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US2649606A
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US2603816A
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US2549349A
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US2591365A
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US2713696A
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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) | 1960-01-29 | 1960-07-30 | 1961-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-29 | 1964-07-30 | 1965-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-29 | 1968-07-30 | 1969-01-29 | $7700.00 | Window Closed / Lapsed |