Patent DE252523C successfully refreshed from Google Patents.
Patent US4481300A successfully refreshed from Google Patents.
Patent US2459007A successfully refreshed from Google Patents.
US2459007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brush roll for suction cleaners
Assignee: Westinghouse Electric Corp
•
Filing: 1945-04-09
•
Granted: 1949-01-11
•
Expires: 1965-04-09
Abstract
No abstract record available.
Inventors
- 👤 Charles H Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:35
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02; A47L9/04; A47L9/0461; A47L9/0466; A47L9/0477
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1952-01-11 | 1952-07-12 | 1953-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-11 | 1956-07-12 | 1957-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-11 | 1960-07-12 | 1961-01-11 | $7700.00 | Window Closed / Lapsed |