US2896243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Venetian blind slat-cleaning device
Assignee: Individual
•
Filing: 1956-12-31
•
Granted: 1959-07-28
•
Expires: 1976-12-31
Abstract
No abstract record available.
Inventors
- 👤 Milton H Schoenfield
- 👤 Donald B Schoenfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:56
CPC Classifications
A; A47; A47L; A47L4/00; A47L4/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE95092C
Cited
US1853238A
Cited
US2172479A
Cited
US2084485A
Cited
US2228786A
Cited
US2622256A
Cited
US2650384A
Cited
US2491274A
Cited
US2761167A
Cited
US2759211A
Cited
US2790192A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-27 | 1963-01-26 | 1963-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-27 | 1967-01-26 | 1967-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-27 | 1971-01-26 | 1971-07-28 | $7700.00 | Window Closed / Lapsed |