Patent US2598239A successfully refreshed from Google Patents.
US2598239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conditioning yarn, thread and the like
Assignee: DULKEN
•
Filing: 1946-12-16
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Granted: 1952-05-27
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Expires: 1966-12-16
Abstract
No abstract record available.
Inventors
- 👤 Charles F Dulken
- 👤 Helmuth C Sonntag
- 👤 Westwater George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:29
CPC Classifications
D; D06; D06B; D06B1/00; D06B1/10; D06B1/14; D06B1/148; D06B1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US168978A
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US384524A
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US788757A
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US895123A
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FR665746A
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US1828463A
Cited
FR778806A
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US2241759A
Cited
US2281615A
Cited
US2351865A
Cited
US2453366A
Cited
US2406997A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-27 | 1955-11-26 | 1956-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-27 | 1959-11-26 | 1960-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-27 | 1963-11-26 | 1964-05-27 | $7700.00 | Window Closed / Lapsed |