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US238321A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carpet-sweeper
Assignee: —
•
Filing: —
•
Granted: 1881-03-01
•
Expires: 1898-03-01
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:42
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/32; A47L11/33
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1884-02-29 | 1884-08-30 | 1885-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1888-02-29 | 1888-08-30 | 1889-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1892-02-29 | 1892-08-30 | 1893-03-01 | $7700.00 | Window Closed / Lapsed |