Patent US3451206A successfully refreshed from Google Patents.
US3451206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machines for imparting twist to yarns
Assignee: Individual
•
Filing: 1967-01-26
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Granted: 1969-06-24
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Expires: 1987-01-26
Abstract
No abstract record available.
Inventors
- 👤 Alexander W P Mackintosh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:26
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/0206; D02G1/0266
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2936567A
Cited
FR1183720A
Cited
GB857872A
Cited
US3071838A
Cited
US3114235A
Cited
FR1268471A
Cited
US3114231A
Cited
US3066473A
Cited
US3041814A
Cited
US3137119A
Cited
FR1293967A
Cited
US3043084A
Cited
US3296786A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-23 | 1972-12-23 | 1973-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-23 | 1976-12-23 | 1977-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-23 | 1980-12-23 | 1981-06-24 | $7700.00 | Window Closed / Lapsed |