USRE31368F1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floor system for grain bin
Assignee: Grain Systems Inc
•
Filing: 1980-01-21
•
Granted: 1989-03-07
•
Expires: 2000-01-21
Abstract
No abstract record available.
Inventors
- 👤 Mark A Trumper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 05:03
CPC Classifications
F; F26; F26B; F26B25/00; F26B25/06; F26B25/08; F26B25/10; A; A01; A01F; A01F25/00; A01F25/04; A01F25/08; B; B65; B65D; B65D88/00; B65D88/74; B65D88/742
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-06 | 1992-09-05 | 1993-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-06 | 1996-09-05 | 1997-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-06 | 2000-09-05 | 2001-03-07 | $7700.00 | Window Closed / Lapsed |