US2636217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry spinning apparatus
Assignee: Solutia Inc
•
Filing: 1949-07-20
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Granted: 1953-04-28
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Expires: 1969-07-20
Abstract
No abstract record available.
Inventors
- 👤 Walter H Hammond
- 👤 Laurence C Holt
- 👤 Rodger L Schaefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:50
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/04; D01F; D01F6/00; D01F6/02; D01F6/18
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) | 1956-04-27 | 1956-10-27 | 1957-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-27 | 1960-10-27 | 1961-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-27 | 1964-10-27 | 1965-04-28 | $7700.00 | Window Closed / Lapsed |