US2773344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertical twisting machine
Assignee: Individual
•
Filing: 1951-04-12
•
Granted: 1956-12-11
•
Expires: 1971-04-12
Abstract
No abstract record available.
Inventors
- 👤 Charles F Van Hook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:46
CPC Classifications
D; D01; D01H; D01H1/00; D01H1/10; D01H1/101; D07; D07B; D07B3/00; D07B3/08; D07B3/10; D07B2207/00; D07B2207/40; D07B2207/409
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1836208A
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US2177812A
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GB600158A
Cited
US2500393A
Cited
US2452255A
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US2445261A
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US2690685A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |