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US2545016A
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Screw conveyer ditching machine
Assignee: BERRY BROS MACHINERY
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Filing: 1947-07-14
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Granted: 1951-03-13
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Expires: 1967-07-14
Abstract
No abstract record available.
Inventors
- 👤 Sherman E Berry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:24
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US294567A
Cited
US1071477A
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US1871856A
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US2202882A
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US2311834A
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US2332729A
Cited
US2360334A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |