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US2997747A
Expired / Lapsed
US
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Crimping apparatus for treating fibers
Assignee: Joseph Bancroft and Sons Co
•
Filing: 1959-12-21
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Granted: 1961-08-29
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Expires: 1979-12-21
Abstract
No abstract record available.
Inventors
- 👤 Carl J Russo
- 👤 Alexander L Trifunovic
- 👤 Henry A Sinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:01
CPC Classifications
D; D06; D06B; D06B23/00; D02; D02G; D02G1/00; D02G1/12
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) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |