US3477536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric drive system
Assignee: Energy Systems Inc
•
Filing: 1967-09-21
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Granted: 1969-11-11
•
Expires: 1987-09-21
Abstract
No abstract record available.
Inventors
- 👤 Eugene P Carini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:36
CPC Classifications
B; B60; B60K; B60K7/00; B60K7/0007; B60K17/00; B60K17/04; B60K17/14; B60K17/145; B60G; B60G2202/00; B60G2202/10; B60G2202/12; B60G2300/00; B60G2300/50; B60K17/043; B60K2007/003; B60K2007/0038; B60K2007/0061; B60L; B60L2220/00; B60L2220/40; B60L2220/46; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19051; Y10T74/19056
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US931743A
Cited
US1095967A
Cited
US1101201A
Cited
US1258154A
Cited
AT85925B
Cited
US1284970A
Cited
US1610666A
Cited
US2521838A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-10 | 1973-05-12 | 1973-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-10 | 1977-05-12 | 1977-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-10 | 1981-05-12 | 1981-11-11 | $7700.00 | Window Closed / Lapsed |