Patent US3389467A successfully refreshed from Google Patents.
Patent US2276812A successfully refreshed from Google Patents.
US2276812A
Expired / Lapsed
US
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Electric vehicle drive system
Assignee: General Electric Co
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Filing: 1939-01-12
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Granted: 1942-03-17
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Expires: 1959-01-12
Abstract
No abstract record available.
Inventors
- 👤 Lewis W Webb
- 👤 Jacob W Mcnairy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:42
CPC Classifications
B; B60; B60L; B60L7/00; B60L7/003; B60L7/02; B60L7/04; B60L7/24; B60L2200/00; B60L2200/26; B60L2240/00; B60L2240/10; B60L2240/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-03-16 | 1945-09-15 | 1946-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-03-16 | 1949-09-15 | 1950-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-03-16 | 1953-09-15 | 1954-03-17 | $7700.00 | Window Closed / Lapsed |