US2726426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Louvered windows
Assignee: FREDERICK M FINK
•
Filing: 1952-04-07
•
Granted: 1955-12-13
•
Expires: 1972-04-07
Abstract
No abstract record available.
Inventors
- 👤 Donald I Biggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:27
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)
US306816A
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US1960763A
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US2324454A
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US2337230A
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US2394059A
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US2531499A
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US2513250A
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US2499692A
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US2565447A
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US2613405A
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US2587567A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-12 | 1959-06-13 | 1959-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-12 | 1963-06-13 | 1963-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-12 | 1967-06-13 | 1967-12-13 | $7700.00 | Window Closed / Lapsed |