US2643759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyer for corn harvesters
Assignee: Individual
•
Filing: 1949-01-24
•
Granted: 1953-06-30
•
Expires: 1969-01-24
Abstract
No abstract record available.
Inventors
- 👤 Melvin L Swanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:55
CPC Classifications
A; A01; A01D; A01D45/00; A01D45/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US219871A
Cited
US363867A
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US552038A
Cited
DE496152C
Cited
DE512397C
Cited
US1902292A
Cited
DE513590C
Cited
US2045081A
Cited
US2267303A
Cited
US2463061A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |