Patent US4058782A successfully refreshed from Google Patents.
Patent US3721285A successfully refreshed from Google Patents.
US3721285A
Expired / Lapsed
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Method of making a venetian-blind installation
Assignee: Levolor Corp
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Filing: 1969-05-29
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Granted: 1973-03-20
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Expires: 1989-05-29
Abstract
Abstract PLANE OF THE LADDER-AND-SLAT ASSEMBLY OF THE BLIND IS INCLINED TO CORRESPOND WITH THE INCLINATION OF THE WINDOW OPENING. A BUILDING WALL IS INCLINED TO THE VERTICAL AND HAS A WINDOW OPENING THEREIN WHICH IS PROVIDED WITH A VENETIAN BLIND. THE GENERAL PLANE OF THE WINDOW OPENING INCLINES SIMILARLY TO THE INCLINATION OF THE WALL, AND THE
Inventors
- 👤 V Debs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:20
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/24; E06B9/26; E06B9/28; E06B9/30; E06B9/32; E06B9/327
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) | 1976-03-19 | 1976-09-18 | 1977-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-19 | 1980-09-18 | 1981-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-19 | 1984-09-18 | 1985-03-20 | $7700.00 | Window Closed / Lapsed |