US3321602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage-sensitive multiple switch
Assignee: Sprague Electric Co
•
Filing: 1965-07-12
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Granted: 1967-05-23
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Expires: 1985-07-12
Abstract
No abstract record available.
Inventors
- 👤 Henry D Hazzard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:25
CPC Classifications
H; H02; H02H; H02H9/00; H02H9/04; H03; H03K; H03K17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A VOLTAGE SENSITIVE MULTIPLE SWITCH COMPRISING A VALVE METAL BODY HAVING A PLURALITY OF DIELECTRIC OXIDE AREAS HAVING PROGRESSIVELY HIGHER BREAKDOWN VOLTAGES,
Claim 2
Dependent Claim
22 words
A VOLTAGE SENSITIVE MULTIPLE SWITCH COMPRISING A VALVE METAL BODY HAVING A PLURALITY OF DIELECTRIC OXIDE AREAS HAVING PROGRESSIVELY HIGHER BREAKDOWN VOLTAGES,
References Cited (Backward Citations)
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 |