US3521712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soil cultivating implement
Assignee: C Van der Lely NV
•
Filing: 1966-02-23
•
Granted: 1970-07-28
•
Expires: 1986-02-23
Abstract
No abstract record available.
Inventors
- 👤 Cornelis Van Der Lely
- 👤 Ary Van Der Lely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:40
CPC Classifications
A; A01; A01B; A01B13/00; A01B13/02; A01B33/00; A01B33/02; A01B33/021; A01B33/08; A01B33/14; A01B33/142; A01B33/144; F; F16; F16H; F16H3/00; F16H3/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US736279A
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US1600663A
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US1676646A
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US1693895A
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US2020524A
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US2473770A
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US2424459A
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US2582364A
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GB618658A
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GB674769A
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US2787943A
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GB821349A
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GB953202A
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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) | 1973-07-27 | 1974-01-26 | 1974-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-27 | 1978-01-26 | 1978-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-27 | 1982-01-26 | 1982-07-28 | $7700.00 | Window Closed / Lapsed |