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US2609652A
Expired / Lapsed
US
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Double-twist spindle
Assignee: UNION DES FABRIQUES BELGES DE
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Filing: 1949-10-19
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Granted: 1952-09-09
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Expires: 1969-10-19
Abstract
No abstract record available.
Inventors
- 👤 Halleux Pierre De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:36
CPC Classifications
D; D01; D01H; D01H7/00; D01H7/02; D01H7/86; D01H7/868
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) | 1955-09-09 | 1956-03-10 | 1956-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-09 | 1960-03-10 | 1960-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-09 | 1964-03-10 | 1964-09-09 | $7700.00 | Window Closed / Lapsed |