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Patent US3543502A successfully refreshed from Google Patents.
US3543502A
Expired / Lapsed
US
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Twisting machines for heavy bobbins for the collection of twisted yarn
Assignee: Individual
•
Filing: 1968-07-22
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Granted: 1970-12-01
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Expires: 1988-07-22
Abstract
No abstract record available.
Inventors
- 👤 Michele Ratti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:08
CPC Classifications
D; D01; D01H; D01H1/00; D01H1/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1467457A
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US2021031A
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US2150951A
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US2158611A
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US2249404A
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US2318162A
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US2743061A
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US3478504A
Cited
US3441231A
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US3430875A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |