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US2660239A
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Center bar for flexible storm windows
Assignee: COLUMBIA MILLS Inc
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Filing: 1951-01-02
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Granted: 1953-11-24
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Expires: 1971-01-02
Abstract
No abstract record available.
Inventors
- 👤 Fred J Burns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:43
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/04; E06B3/28; E06B3/285; Y; Y10; Y10S; Y10S160/00; Y10S160/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US647891A
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US1810146A
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US1808564A
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US2392715A
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US2470129A
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US2500470A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |