US2489922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite wall panel
Assignee: Celotex Corp
•
Filing: 1944-06-30
•
Granted: 1949-11-29
•
Expires: 1964-06-30
Abstract
No abstract record available.
Inventors
- 👤 Carl G Muench
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:06
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04C; E04C2/00; E04C2/02; E04C2/26; E04C2/284; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/31504; Y10T428/31815; Y10T428/31819
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1740928A
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US1770507A
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US1776254A
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US1883486A
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US1976684A
Cited
US2198776A
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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) | 1952-11-28 | 1953-05-30 | 1953-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-28 | 1957-05-30 | 1957-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-28 | 1961-05-30 | 1961-11-29 | $7700.00 | Window Closed / Lapsed |