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Patent US3421406A successfully refreshed from Google Patents.
US3421406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making a braid
Assignee: Wool O Co
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Filing: 1967-06-15
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Granted: 1969-01-14
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Expires: 1987-06-15
Abstract
No abstract record available.
Inventors
- 👤 Robert G Mitchell
- 👤 Francis A Egert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:33
CPC Classifications
D; D04; D04C; D04C3/00; D04C3/02; D04C3/14; D04C3/18; D04C1/00; D04C1/02
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) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |