US2440108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overcurrent protective system for a direct-current load circuit
Assignee: General Electric Co
•
Filing: 1943-05-05
•
Granted: 1948-04-20
•
Expires: 1963-05-05
Abstract
No abstract record available.
Inventors
- 👤 Donald E Maxwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:04
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/08; H02H3/093
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US991189A
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US1680410A
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US1909471A
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US1901628A
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US1877446A
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US2053445A
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US2210669A
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US2182637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-20 | 1951-10-20 | 1952-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-20 | 1955-10-20 | 1956-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-20 | 1959-10-20 | 1960-04-20 | $7700.00 | Window Closed / Lapsed |