US3321683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric circuit elements
Assignee: Sprague Electric Co
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Filing: 1965-06-01
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Granted: 1967-05-23
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Expires: 1985-06-01
Abstract
No abstract record available.
Inventors
- 👤 William A Tatem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:29
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/08; H01G4/12; H01G4/1272; Y; Y10; Y10S; Y10S65/00; Y10S65/04; Y10T; Y10T29/00; Y10T29/43; Y10T29/435
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
AN ELECTRICAL CIRCUIT ELEMENT COMPRISING A CERAMIC BODY HAVING AN OXYGEN-IMPERVIOUS ELECTRODE AND AN OXYGEN-PERVASIVE COUNTERELECTRODE, THE SURFACE OF SAID BODY UNERLYING SAID COUNTERELECTRODE BEING IN AN OXIDIZED STATE AND SAID BODY UNDERLYING SAID OXYGEN-IMPERVIOUS ELECTRODE BEING IN A REDUCED STATE.
Claim 2
Dependent Claim
41 words
AN ELECTRICAL CIRCUIT ELEMENT COMPRISING A CERAMIC BODY HAVING AN OXYGEN-IMPERVIOUS ELECTRODE AND AN OXYGEN-PERVASIVE COUNTERELECTRODE, THE SURFACE OF SAID BODY UNERLYING SAID COUNTERELECTRODE BEING IN AN OXIDIZED STATE AND SAID BODY UNDERLYING SAID OXYGEN-IMPERVIOUS ELECTRODE BEING IN A REDUCED STATE.
References Cited (Backward Citations)
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US2627645A
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US2633543A
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US2520376A
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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) | 1970-05-22 | 1970-11-21 | 1971-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-22 | 1974-11-21 | 1975-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-22 | 1978-11-21 | 1979-05-23 | $7700.00 | Window Closed / Lapsed |