US2586481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for corrugating asbestos-cement sheets
Assignee: Turners Asbestos Cement Co Ltd
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Filing: 1946-06-01
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Granted: 1952-02-19
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Expires: 1966-06-01
Abstract
No abstract record available.
Inventors
- 👤 Rooksby William Holdsworth
- 👤 Homer Herbert
- 👤 Burgess Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:40
CPC Classifications
B; B28; B28B; B28B1/00; B28B1/52; B28B1/528; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24669; Y10T428/24694
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |