Patent US2644189A successfully refreshed from Google Patents.
US2644189A
Expired / Lapsed
US
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Hand-supported suction brush for clothes
Assignee: Individual
•
Filing: 1950-04-12
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Granted: 1953-07-07
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Expires: 1970-04-12
Abstract
No abstract record available.
Inventors
- 👤 Elizabeth C Calvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:08
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/24; A47L5/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE440050C
Cited
US935558A
Cited
US935559A
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US1056819A
Cited
US1093820A
Cited
US1589978A
Cited
US1770935A
Cited
US2134396A
Cited
US2251069A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-06 | 1957-01-05 | 1957-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-06 | 1961-01-05 | 1961-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-06 | 1965-01-05 | 1965-07-07 | $7700.00 | Window Closed / Lapsed |