US2941232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Venetian blind cleaner
Assignee: WILLIS S CLAYTON JR
•
Filing: 1959-01-19
•
Granted: 1960-06-21
•
Expires: 1979-01-19
Abstract
No abstract record available.
Inventors
- 👤 Benjamin K Milbourne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:01
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02; A47L9/04; A47L9/0461; A47L9/0488; A47L4/00; A47L9/06; A47L9/0693
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US21451A
Cited
DE512009C
Cited
GB191029676A
Cited
US1754626A
Cited
DE602140C
Cited
GB433195A
Cited
DE838088C
Cited
US2812155A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |