US2783556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulically controlled digger
Assignee: Barber Greene Co
•
Filing: 1951-05-05
•
Granted: 1957-03-05
•
Expires: 1971-05-05
Abstract
No abstract record available.
Inventors
- 👤 Burns Leonard Stephen
- 👤 Banister Guy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:16
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/08; E02F3/086; E02F3/082; E02F3/085; E02F3/10; E02F5/00; E02F5/02; E02F5/14; E02F5/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2109393A
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US2084887A
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US2263779A
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US2252837A
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US2393882A
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US2529193A
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US2550071A
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US2641070A
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US2617314A
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US2708800A
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US2658342A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-04 | 1960-09-03 | 1961-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-04 | 1964-09-03 | 1965-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-04 | 1968-09-03 | 1969-03-05 | $7700.00 | Window Closed / Lapsed |