US3543140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant potential output device having low temperature coefficient and overload protection
Assignee: Emerson Electric Co
•
Filing: 1968-02-19
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Granted: 1970-11-24
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Expires: 1988-02-19
Abstract
No abstract record available.
Inventors
- 👤 Friedrich Johann Krausser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:23
CPC Classifications
G; G05; G05F; G05F3/00; G05F3/02; G05F3/08; G05F3/10; G05F3/16; G05F3/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2832035A
Cited
US3094654A
Cited
US3069617A
Cited
US3300710A
Cited
US3293540A
Cited
US3419789A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-23 | 1974-05-25 | 1974-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-23 | 1978-05-25 | 1978-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-23 | 1982-05-25 | 1982-11-24 | $7700.00 | Window Closed / Lapsed |