US2684728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for removing air from viscose solution
Assignee: Industrial Rayon Corp
•
Filing: 1952-05-17
•
Granted: 1954-07-27
•
Expires: 1972-05-17
Abstract
No abstract record available.
Inventors
- 👤 Malm Lawrence Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:24
CPC Classifications
D; D01; D01D; D01D1/00; D01D1/10; D01D1/103
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1556098A
Cited
US2041059A
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US2146532A
Cited
US2355057A
Cited
US2408021A
Cited
US2498836A
Cited
US2515648A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-26 | 1958-01-25 | 1958-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-26 | 1962-01-25 | 1962-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-26 | 1966-01-25 | 1966-07-27 | $7700.00 | Window Closed / Lapsed |