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Patent US2838246A successfully refreshed from Google Patents.
US2838246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machines for treating asbestos and similar fibers
Assignee: Individual
•
Filing: 1954-12-06
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Granted: 1958-06-10
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Expires: 1974-12-06
Abstract
No abstract record available.
Inventors
- 👤 Adorno Stefano M Cattaneo
- 👤 Vercelli Giorgio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:10
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/02; D02G3/16; D02G3/20; B; B02; B02C; B02C13/00; B02C13/26; B02C19/00; B02C19/0056
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) | 1961-06-09 | 1961-12-09 | 1962-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-09 | 1965-12-09 | 1966-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-09 | 1969-12-09 | 1970-06-10 | $7700.00 | Window Closed / Lapsed |