Patent US2577091A successfully refreshed from Google Patents.
US2577091A
Expired / Lapsed
US
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Covering box dumper
Assignee: FMC Corp
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Filing: 1949-01-15
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Granted: 1951-12-04
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Expires: 1969-01-15
Abstract
No abstract record available.
Inventors
- 👤 Glenn M Porter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:56
CPC Classifications
B; B65; B65G; B65G65/00; B65G2814/00; B65G2814/03; B65G2814/0301; B65G2814/0314; B65G2814/0316; B65G2814/0317
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) | 1954-12-03 | 1955-06-04 | 1955-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-03 | 1959-06-04 | 1959-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-03 | 1963-06-04 | 1963-12-04 | $7700.00 | Window Closed / Lapsed |