Patent US2948211A successfully refreshed from Google Patents.
US2948211A
Expired / Lapsed
US
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Louver control for air conditioning grille
Assignee: Dow Silicones Corp
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Filing: 1957-05-10
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Granted: 1960-08-09
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Expires: 1977-05-10
Abstract
No abstract record available.
Inventors
- 👤 Oscar C Melgaard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:27
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/06; F24F13/075
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2034231A
Cited
US2349544A
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US2555009A
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US2626556A
Cited
US2729158A
Cited
US2642792A
Cited
GB771784A
Cited
US2784626A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |