US2772552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for aftertreatment of freshspun artificial filaments in continuous flowing liquid
Assignee: Ing A Maurer SA
•
Filing: 1950-05-04
•
Granted: 1956-12-04
•
Expires: 1970-05-04
Abstract
No abstract record available.
Inventors
- 👤 Nikles Paul Alfred
- 👤 Bach Guido
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:37
CPC Classifications
D; D01; D01D; D01D10/00; D01D10/04; D01D10/0436; D01D10/0481
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) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |