Patent US2938591A successfully refreshed from Google Patents.
US2938591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive aggregate for motor vehicles
Assignee: Dr Ing HCF Porsche AG
•
Filing: 1956-11-26
•
Granted: 1960-05-31
•
Expires: 1976-11-26
Abstract
No abstract record available.
Inventors
- 👤 Ferdinand A E Porsche
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:58
CPC Classifications
B; B60; B60K; B60K5/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2001029A
Cited
US1974033A
Cited
US2035032A
Cited
US2143889A
Cited
US2087619A
Cited
DE631145C
Cited
US2014670A
Cited
US2128930A
Cited
US2237369A
Cited
GB453387A
Cited
US2116666A
Cited
US2199517A
Cited
FR872978A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |