Patent US2661230A successfully refreshed from Google Patents.
US2661230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Knot tying mechanism
Assignee: Individual
•
Filing: 1948-09-24
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Granted: 1953-12-01
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Expires: 1968-09-24
Abstract
No abstract record available.
Inventors
- 👤 Edward E West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:04
CPC Classifications
B; B65; B65B; B65B13/00; B65B13/18; B65B13/24; B65B13/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US238327A
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US267936A
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US286819A
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US492591A
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US2010591A
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US1155860A
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US1125666A
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US1099128A
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US1774898A
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US1830208A
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US2239342A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |