US2649629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Louver construction
Assignee: Individual
•
Filing: 1949-11-28
•
Granted: 1953-08-25
•
Expires: 1969-11-28
Abstract
No abstract record available.
Inventors
- 👤 Jay H Baxter
- 👤 Robert B Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:07
CPC Classifications
E; E06; E06B; E06B7/00; E06B7/02; E06B7/08; E06B7/084
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US687705A
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US840820A
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FR528461A
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US1551753A
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US2137426A
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US2119803A
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US2164814A
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US2311300A
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US2386380A
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US2457871A
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US2531499A
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US2513250A
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US2565447A
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US2556695A
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US2601707A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-24 | 1957-02-23 | 1957-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-24 | 1961-02-23 | 1961-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-24 | 1965-02-23 | 1965-08-25 | $7700.00 | Window Closed / Lapsed |