Patent US2587619A successfully refreshed from Google Patents.
US2587619A
Expired / Lapsed
US
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Process and apparatus for the production of synthetic thread
Assignee: Beaunit Mills Inc
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Filing: 1947-02-12
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Granted: 1952-03-04
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Expires: 1967-02-12
Abstract
No abstract record available.
Inventors
- 👤 Hofmann Hugo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:58
CPC Classifications
D; D01; D01D; D01D10/00; D01D10/04; D01D10/0436; D01D10/0463
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE209923C
Cited
FR379935A
Cited
FR531533A
Cited
US1651229A
Cited
US1910879A
Cited
GB460079A
Cited
US2251931A
Cited
GB515127A
Cited
US2334325A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-04 | 1955-09-03 | 1956-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-04 | 1959-09-03 | 1960-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-04 | 1963-09-03 | 1964-03-04 | $7700.00 | Window Closed / Lapsed |