Patent US2581210A successfully refreshed from Google Patents.
US2581210A
Expired / Lapsed
US
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Positive pressure machine for forming continuous strips of asbestoscement compositions and the like
Assignee: Forming Machine Co of America Inc
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Filing: 1948-04-29
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Granted: 1952-01-01
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Expires: 1968-04-29
Abstract
No abstract record available.
Inventors
- 👤 Alvan D Simpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:32
CPC Classifications
B; B28; B28B; B28B1/00; B28B1/52; B28B1/528; A; A01; A01D; A01D41/00; B28B1/526; B28B1/527; D; D21; D21F; D21F9/00; D21F9/04
Claims Analysis
Total Claims: 0
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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) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |