Patent US3399743A successfully refreshed from Google Patents.
US3399743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive unit for vehicles
Assignee: Dr Ing HCF Porsche AG
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Filing: 1966-03-03
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Granted: 1968-09-03
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Expires: 1986-03-03
Abstract
No abstract record available.
Inventors
- 👤 Hetmann Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:46
CPC Classifications
B; B60; B60K; B60K5/00; B60K5/04; F; F16; F16H; F16H37/00; F16H37/02; F16H37/06; F16H37/08; F16H2702/00; F16H2702/02; F16H2702/04
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) | 1971-09-03 | 1972-03-04 | 1972-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-03 | 1976-03-04 | 1976-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-03 | 1980-03-04 | 1980-09-03 | $7700.00 | Window Closed / Lapsed |