US2492909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Louvered sheet material
Assignee: Flex-O-Glass Inc
•
Filing: 1945-01-11
•
Granted: 1949-12-27
•
Expires: 1965-01-11
Abstract
No abstract record available.
Inventors
- 👤 Warp Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:34
CPC Classifications
B; B21; B21D; B21D31/00; B21D31/04; B21D53/00; B21D53/02; B21D53/022; B21D53/025; Y; Y10; Y10S; Y10S160/00; Y10S160/07; Y10T; Y10T428/00; Y10T428/12; Y10T428/12229; Y10T428/12264; Y10T428/12271; Y10T428/24; Y10T428/24273; Y10T428/24281; Y10T428/24298; Y10T428/24314; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US173722A
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US477545A
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US748669A
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US903340A
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US1911403A
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US1941330A
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US1966431A
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US1991532A
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US2118282A
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US2195704A
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US2325458A
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US2295194A
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US2366224A
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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) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |