US3389545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for spinning core-yarn
Assignee: Maschinenfabrik Rieter AG
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Filing: 1966-04-18
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Granted: 1968-06-25
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Expires: 1986-04-18
Abstract
No abstract record available.
Inventors
- 👤 Grunder Hans-Rudolf
- 👤 Merz Franz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:29
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/22; D02G3/36; D02G3/367
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) | 1971-06-25 | 1971-12-25 | 1972-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-25 | 1975-12-25 | 1976-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-25 | 1979-12-25 | 1980-06-25 | $7700.00 | Window Closed / Lapsed |