US2574641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window construction
Assignee: Individual
•
Filing: 1947-01-02
•
Granted: 1951-11-13
•
Expires: 1967-01-02
Abstract
No abstract record available.
Inventors
- 👤 Ollie L Herron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:36
CPC Classifications
E; E06; E06B; E06B7/00; E06B7/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US651943A
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US1610470A
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US1795853A
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US1797845A
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US1936641A
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US1929316A
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DE671339C
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US2119667A
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US2219461A
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GB512342A
Cited
US2219593A
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US2260451A
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GB568633A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |