US2637868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabric cleaning stick and brush combination
Assignee: Individual
•
Filing: 1945-09-11
•
Granted: 1953-05-12
•
Expires: 1965-09-11
Abstract
No abstract record available.
Inventors
- 👤 William F Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:27
CPC Classifications
A; A47; A47L; A47L25/00; A47L25/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB274330A
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AU625132A
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US2007245A
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US2234558A
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US2201467A
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US2188544A
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GB522097A
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US2177651A
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US2301774A
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US2354260A
Cited
GB557318A
Cited
GB590264A
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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) | 1956-05-11 | 1956-11-10 | 1957-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-11 | 1960-11-10 | 1961-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-11 | 1964-11-10 | 1965-05-12 | $7700.00 | Window Closed / Lapsed |