US3439559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Superimposed steering gear for tracked vehicles
Assignee: ZF Friedrichshafen AG
•
Filing: 1966-05-24
•
Granted: 1969-04-22
•
Expires: 1986-05-24
Abstract
No abstract record available.
Inventors
- 👤 Bernhard Binger
- 👤 Karlheinz Duernay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:25
CPC Classifications
B; B62; B62D; B62D11/00; B62D11/02; B62D11/06; B62D11/10; B62D11/14; B62D11/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3199376A
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US3292458A
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US3294187A
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US3377885A
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US3373636A
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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) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |