US3530557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making non-woven fibrous tubing
Assignee: Oskar Dilo Maschinenfabrik KG
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Filing: 1968-07-01
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Granted: 1970-09-29
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Expires: 1988-07-01
Abstract
No abstract record available.
Inventors
- 👤 Richard Dilo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:03
CPC Classifications
D; D04; D04H; D04H18/00; D04H18/02; D04H1/00; D04H1/70; D04H1/76
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |