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Patent US2720074A successfully refreshed from Google Patents.
US2720074A
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US
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Thread suction means on spinning frames
Assignee: Individual
•
Filing: 1952-09-29
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Granted: 1955-10-11
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Expires: 1972-09-29
Abstract
No abstract record available.
Inventors
- 👤 Buhler Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:29
CPC Classifications
D; D01; D01H; D01H5/00; D01H5/18; D01H5/60; D01H5/66; D01H11/00; D01H11/005
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) | 1958-10-10 | 1959-04-11 | 1959-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-10 | 1963-04-11 | 1963-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-10 | 1967-04-11 | 1967-10-11 | $7700.00 | Window Closed / Lapsed |