US2538972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for production of fibrous cement articles
Assignee: Individual
•
Filing: 1947-12-31
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Granted: 1951-01-23
•
Expires: 1967-12-31
Abstract
No abstract record available.
Inventors
- 👤 Magnani Alessandro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:54
CPC Classifications
B; B26; B26D; B26D7/00; B26D7/20; B23; B23D; B23D45/00; B23D45/18; B23D45/20; B23D47/00; B23D47/04; B23D47/042; B25; B25B; B25B11/00; B25B11/005; B26D1/00; B26D1/56; B26D1/60; B26D1/605; B26D7/01; B26D7/018; B28; B28B; B28B11/00; B28B11/14; B28B11/16; B28B13/00; B28B13/04; B26D2007/0012; B26D2007/0031; Y; Y10; Y10S; Y10S264/00; Y10S264/78; Y10T; Y10T83/00; Y10T83/04; Y10T83/0448; Y10T83/0453; Y10T83/0515; Y10T83/0524; Y10T83/0538; Y10T83/0548; Y10T83/0562; Y10T83/202; Y10T83/2033; Y10T83/2037; Y10T83/2057; Y10T83/2066; Y10T83/207; Y10T83/263; Y10T83/465; Y10T83/4699; Y10T83/4702; Y10T83/4766; Y10T83/4795; Y10T83/4812; Y10T83/525; Y10T83/54; Y10T83/768; Y10T83/7863
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US933688A
Cited
US942164A
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GB119979A
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US1472895A
Cited
US1987409A
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US1949281A
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US2071097A
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US2117797A
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US2261972A
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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) | 1954-01-22 | 1954-07-24 | 1955-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-22 | 1958-07-24 | 1959-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-22 | 1962-07-24 | 1963-01-23 | $7700.00 | Window Closed / Lapsed |