US2432002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete form lining and method of manufacture
Assignee: Celotex Corp
•
Filing: 1941-10-20
•
Granted: 1947-12-02
•
Expires: 1961-10-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Emile Frederick
- 👤 Waterfall Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:02
CPC Classifications
E; E04; E04G; E04G9/00; E04G9/10; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/249925; Y10T442/00; Y10T442/20; Y10T442/2221; Y10T442/2762; Y10T442/277
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) | 1950-12-01 | 1951-06-02 | 1951-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-01 | 1955-06-02 | 1955-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-01 | 1959-06-02 | 1959-12-02 | $7700.00 | Window Closed / Lapsed |