Patent US2830392A successfully refreshed from Google Patents.
US2830392A
Expired / Lapsed
US
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Earth-moving apparatus
Assignee: Fairchild Engine and Airplane Corp
•
Filing: 1953-05-26
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Granted: 1958-04-15
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Expires: 1973-05-26
Abstract
No abstract record available.
Inventors
- 👤 Albert E Blomquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:26
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/96; E02F3/961; E02F3/76; E02F3/769
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1466464A
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AU2267129A
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US1856148A
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US1886780A
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US2243831A
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US2312390A
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US2303379A
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US2483033A
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US2488695A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |