US2838718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Current limiting protection for contactors
Assignee: ITE Circuit Breaker Co
•
Filing: 1953-05-28
•
Granted: 1958-06-10
•
Expires: 1973-05-28
Abstract
No abstract record available.
Inventors
- 👤 Edmunds William Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:07
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/02; H02H3/021; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/122
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1309027A
Cited
FR743126A
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US1134752A
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US1658912A
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US1688833A
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US1800256A
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US1809827A
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US1775658A
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US2147012A
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US2553949A
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US2559913A
Cited
US2609425A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-09 | 1961-12-09 | 1962-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-09 | 1965-12-09 | 1966-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-09 | 1969-12-09 | 1970-06-10 | $7700.00 | Window Closed / Lapsed |