Patent US3512230A successfully refreshed from Google Patents.
US3512230A
Expired / Lapsed
US
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Method and apparatus for the production of nonwoven fabrics
Assignee: SNIA Viscosa SpA
•
Filing: 1966-07-25
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Granted: 1970-05-19
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Expires: 1986-07-25
Abstract
No abstract record available.
Inventors
- 👤 Ettore Luzzatto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:32
CPC Classifications
D; D04; D04H; D04H3/00; D04H3/02; D02; D02G; D02G1/00; D02G1/14; Y; Y10; Y10S; Y10S493/00; Y10S493/967
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2407548A
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US2399258A
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US2778065A
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US3016581A
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US3148101A
Cited
US3101521A
Cited
US3235935A
Cited
US3235442A
Cited
US3391048A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-18 | 1973-11-17 | 1974-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-18 | 1977-11-17 | 1978-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-18 | 1981-11-17 | 1982-05-19 | $7700.00 | Window Closed / Lapsed |