US2684566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic system for multiple twist spindles
Assignee: Akzo Nobel UK PLC
•
Filing: 1951-02-28
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Granted: 1954-07-27
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Expires: 1971-02-28
Abstract
No abstract record available.
Inventors
- 👤 Ingham S Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:08
CPC Classifications
D; D01; D01H; D01H7/00; D01H7/02; D01H7/86; D01H7/862
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2605602A
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US2233645A
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US2374085A
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US2411126A
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US2445721A
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US2559735A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-26 | 1958-01-25 | 1958-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-26 | 1962-01-25 | 1962-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-26 | 1966-01-25 | 1966-07-27 | $7700.00 | Window Closed / Lapsed |