US2559989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spray drier
Assignee: Individual
•
Filing: 1946-02-19
•
Granted: 1951-07-10
•
Expires: 1966-02-19
Abstract
No abstract record available.
Inventors
- 👤 Nyrop Johan Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:39
CPC Classifications
B; B01; B01F; B01F23/00; B01F23/20; B01F23/21; A; A23; A23C; A23C1/00; A23C1/04; B01D; B01D1/00; B01D1/16; B01D1/18; C; C11; C11D; C11D13/00; C11D13/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1954-07-09 | 1955-01-08 | 1955-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-09 | 1959-01-08 | 1959-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-09 | 1963-01-08 | 1963-07-10 | $7700.00 | Window Closed / Lapsed |