US3528129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing nonwoven fleeces
Assignee: Carl Freudenberg KG
•
Filing: 1966-11-07
•
Granted: 1970-09-15
•
Expires: 1986-11-07
Abstract
No abstract record available.
Inventors
- 👤 Ludwig Hartmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:07
CPC Classifications
D; D04; D04H; D04H3/00; D04H3/005; D04H3/009; D01; D01D; D01D5/00; D01D5/04; D01D5/08; D01D5/098; D01D5/0985; D01D5/22; D01D5/23; D01D5/253; D04H3/08; D04H3/16
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) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |