US2663045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable brushing and nap-raising attachment for carpet cleaning machines
Assignee: Individual
•
Filing: 1950-03-04
•
Granted: 1953-12-22
•
Expires: 1970-03-04
Abstract
No abstract record available.
Inventors
- 👤 Joseph D Conway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:40
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4072; A47L11/32; A47L11/4036; A47L11/4041; A47L11/4044; A47L11/4052; A47L11/4058; A47L11/4063; A47L11/4069
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1409910A
Cited
US1460245A
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US1537946A
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US1757461A
Cited
US1867629A
Cited
US1853047A
Cited
US1891175A
Cited
US2040188A
Cited
US2561279A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-21 | 1957-06-22 | 1957-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-21 | 1961-06-22 | 1961-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-21 | 1965-06-22 | 1965-12-22 | $7700.00 | Window Closed / Lapsed |