US2998620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for centrifuging curly fibers
Assignee: Owens Corning
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Filing: 1958-06-09
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Granted: 1961-09-05
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Expires: 1978-06-09
Abstract
No abstract record available.
Inventors
- 👤 Charles J Stalego
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:00
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/01; C03B37/04; C03B37/045; C03B37/02; C03B37/022; C03B37/075; C03B37/0753; C03C; C03C13/00; C03C2213/00; C03C2213/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2313296A
Cited
FR849842A
Cited
US2331945A
Cited
US2333218A
Cited
US2338473A
Cited
US2624912A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-04 | 1965-03-06 | 1965-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-04 | 1969-03-06 | 1969-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-04 | 1973-03-06 | 1973-09-05 | $7700.00 | Window Closed / Lapsed |