Patent US2741043A successfully refreshed from Google Patents.
US2741043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Land grading machine
Assignee: Individual
•
Filing: 1952-12-03
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Granted: 1956-04-10
•
Expires: 1972-12-03
Abstract
No abstract record available.
Inventors
- 👤 Laurel B Lindbeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:47
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/64; E02F3/6454; E02F3/6463
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1041387A
Cited
US1845324A
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US2090117A
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US2349130A
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US2227433A
Cited
US2325025A
Cited
US2283744A
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US2372459A
Cited
US2317680A
Cited
US2593880A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-10 | 1959-10-10 | 1960-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-10 | 1963-10-10 | 1964-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-10 | 1967-10-10 | 1968-04-10 | $7700.00 | Window Closed / Lapsed |