US3497026A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical power system
Assignee: Union Carbide Corp
•
Filing: 1967-12-26
•
Granted: 1970-02-24
•
Expires: 1987-12-26
Abstract
No abstract record available.
Inventors
- 👤 William L Calvert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:02
CPC Classifications
B; B60; B60K; B60K6/00; B60K6/08; B60K6/10; B60K6/105; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US473871A
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US516917A
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US554138A
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US653264A
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US888405A
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US1495347A
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US1736551A
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FR867738A
Cited
US2511412A
Cited
US2672566A
Cited
US3182742A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |