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Patent US2862254A successfully refreshed from Google Patents.
US2862254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structural building panel construction
Assignee: AMERICAN W M B Inc
•
Filing: 1954-06-10
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Granted: 1958-12-02
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Expires: 1974-06-10
Abstract
No abstract record available.
Inventors
- 👤 George W Meek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:28
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/34; E04C2/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1961-12-01 | 1962-06-02 | 1962-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-01 | 1966-06-02 | 1966-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-01 | 1970-06-02 | 1970-12-02 | $7700.00 | Window Closed / Lapsed |