US2554769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drying equipment
Assignee: IOWA STATE COLLEGE RES FOUND
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Filing: 1948-09-16
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Granted: 1951-05-29
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Expires: 1968-09-16
Abstract
No abstract record available.
Inventors
- 👤 Lionel K Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:32
CPC Classifications
F; F26; F26B; F26B25/00; F26B25/04; F26B17/00; F26B17/18
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) | 1954-05-28 | 1954-11-27 | 1955-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-28 | 1958-11-27 | 1959-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-28 | 1962-11-27 | 1963-05-29 | $7700.00 | Window Closed / Lapsed |