Patent US3471608A successfully refreshed from Google Patents.
US3471608A
Expired / Lapsed
US
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Process for the heated drawing and fixation of filaments
Assignee: Oerlikon Barmag AG
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Filing: 1967-08-08
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Granted: 1969-10-07
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Expires: 1987-08-08
Abstract
No abstract record available.
Inventors
- 👤 Heinz Schippers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:34
CPC Classifications
D; D02; D02J; D02J13/00; D02J13/008; D02J1/00; D02J1/22; D02J1/224
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2533013A
Cited
US2942325A
Cited
US3159964A
Cited
GB947407A
Cited
US3124632A
Cited
US3317980A
Cited
US3329754A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |