Patent US2690642A successfully refreshed from Google Patents.
US2690642A
Expired / Lapsed
US
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Twisting machine
Assignee: Individual
•
Filing: 1948-11-20
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Granted: 1954-10-05
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Expires: 1968-11-20
Abstract
No abstract record available.
Inventors
- 👤 Charles F Van Hook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:03
CPC Classifications
D; D07; D07B; D07B3/00; D07B3/02; D07B3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191217733A
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US1218009A
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US1458997A
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US2004634A
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US2177812A
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US2277102A
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US2379806A
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US2416126A
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US2452255A
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US2477690A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-04 | 1958-04-05 | 1958-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-04 | 1962-04-05 | 1962-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-04 | 1966-04-05 | 1966-10-05 | $7700.00 | Window Closed / Lapsed |