Patent US2659925A successfully refreshed from Google Patents.
US2659925A
Expired / Lapsed
US
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Vacuum floor tool
Assignee: Individual
•
Filing: 1948-06-18
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Granted: 1953-11-24
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Expires: 1968-06-18
Abstract
No abstract record available.
Inventors
- 👤 Delos R Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:16
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02; A47L9/06; A47L9/0606; A47L9/0613; A47L9/0633; A47L9/064; A47L9/0653
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1597855A
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US1782308A
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US1935158A
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CH168700A
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US2140874A
Cited
GB457394A
Cited
US2204128A
Cited
US2241776A
Cited
US2235674A
Cited
US2511238A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |