US2664584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mopping apparatus
Assignee: Individual
•
Filing: 1946-09-20
•
Granted: 1954-01-05
•
Expires: 1966-09-20
Abstract
No abstract record available.
Inventors
- 👤 Edward A Twerdahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:52
CPC Classifications
A; A47; A47L; A47L13/00; A47L13/10; A47L13/50; A47L13/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1164050A
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GB120460A
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US2147782A
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US2114891A
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US2149255A
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US2242140A
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US2255091A
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US2323568A
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US2390753A
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US2374782A
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US2397707A
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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) | 1957-01-04 | 1957-07-06 | 1958-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-04 | 1961-07-06 | 1962-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-04 | 1965-07-06 | 1966-01-05 | $7700.00 | Window Closed / Lapsed |