US3521720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Articulated vehicle with hydraulic drive,steering,and implement manipulating system
Assignee: ISADORE R KOROTKIN
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Filing: 1969-02-28
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Granted: 1970-07-28
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Expires: 1989-02-28
Abstract
No abstract record available.
Inventors
- 👤 Isadore R Korotkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:56
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/02; B; B60; B60K; B60K17/00; B60K17/04; B60K17/10; B62; B62D; B62D53/00; B62D53/02; B62D53/021; E02F3/00; E02F3/04; E02F3/28; E02F3/34; E02F3/3405; E02F3/3408; E02F9/08; E02F9/0841
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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 |