Patent US3537145A successfully refreshed from Google Patents.
US3537145A
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Ring spinning drafting device
Assignee: Oerlikon Textile GmbH and Co KG
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Filing: 1968-10-31
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Granted: 1970-11-03
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Expires: 1988-10-31
Abstract
No abstract record available.
Inventors
- 👤 Karel Josef Meert
- 👤 Erwin Rudolf Siegrist
- 👤 Paul Krauss
- 👤 Willi Pfeifer
- 👤 Heinz Hasslauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:43
CPC Classifications
D; D01; D01H; D01H5/00; D01H5/18; D01H5/26
Claims Analysis
Total Claims: 0
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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) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |