US2617138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum floor mopper
Assignee: Individual
•
Filing: 1948-12-31
•
Granted: 1952-11-11
•
Expires: 1968-12-31
Abstract
No abstract record available.
Inventors
- 👤 Sr Charles Kepler Brown
- 👤 Jr Charles Kepler Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:44
CPC Classifications
A; A47; A47L; A47L7/00; A47L7/0004; A47L7/0014; A47L7/0023; A47L7/0038; A47L7/0042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-11 | 1956-05-12 | 1956-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-11 | 1960-05-12 | 1960-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-11 | 1964-05-12 | 1964-11-11 | $7700.00 | Window Closed / Lapsed |