Patent US3030714A successfully refreshed from Google Patents.
US3030714A
Expired / Lapsed
US
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Earth handling apparatus
Assignee: Individual
•
Filing: 1958-11-24
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Granted: 1962-04-24
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Expires: 1978-11-24
Abstract
No abstract record available.
Inventors
- 👤 William H Sassmann
- 👤 Matthias Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:39
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/769; E02F3/7695
Claims Analysis
Total Claims: 0
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US2988832A
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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) | 1965-04-23 | 1965-10-23 | 1966-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-23 | 1969-10-23 | 1970-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-23 | 1973-10-23 | 1974-04-24 | $7700.00 | Window Closed / Lapsed |