US2555516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spray drier
Assignee: Purex Corp Ltd
•
Filing: 1949-01-24
•
Granted: 1951-06-05
•
Expires: 1969-01-24
Abstract
No abstract record available.
Inventors
- 👤 Alan C Stoneman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:14
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/16; B01D1/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US441106A
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US741831A
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US1145772A
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US1548665A
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US1762026A
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US1894623A
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US1946566A
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US2043378A
Cited
US2100907A
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US2314159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-04 | 1954-12-04 | 1955-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-04 | 1958-12-04 | 1959-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-04 | 1962-12-04 | 1963-06-05 | $7700.00 | Window Closed / Lapsed |