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Patent US3546531A successfully refreshed from Google Patents.
US3546531A
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Overcurrent protection system for polyphase dynamoelectric machines
Assignee: Trane US Inc
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Filing: 1967-08-04
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Granted: 1970-12-08
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Expires: 1987-08-04
Abstract
No abstract record available.
Inventors
- 👤 Robert G Miner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:42
CPC Classifications
H; H02; H02H; H02H7/00; H02H7/08; H02H7/085; H02H3/00; H02H3/08; H02H3/083
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2967977A
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US2885568A
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US2930938A
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US3110844A
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US3119951A
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US3243658A
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US3309478A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |