US2497399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preserving unpopped popcorn at optimum moisture content
Assignee: MICHIGAN STATE BOARD OF AGRICU
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Filing: 1946-09-13
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Granted: 1950-02-14
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Expires: 1966-09-13
Abstract
No abstract record available.
Inventors
- 👤 Stephen T Dexter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:17
CPC Classifications
A; A23; A23B; A23B9/00; A23B9/16; A23B9/18; A23B9/20; A23L; A23L7/00; A23L7/10; A23L7/161; A23L7/174; A23L7/183
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) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |