US3496319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High current electric switch with arc chute interlocked with movable contact,and spring driving means
Assignee: Empire Switchboard Co Inc
•
Filing: 1966-12-07
•
Granted: 1970-02-17
•
Expires: 1986-12-07
Abstract
No abstract record available.
Inventors
- 👤 Alexander R Norden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:33
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/30; H01H9/34; H01H9/345; H01H3/00; H01H3/22; H01H3/30; H01H9/38; H01H9/383; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18856; Y10T74/18864
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2815418A
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US2922009A
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US3025376A
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US3158720A
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US3171926A
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US3235688A
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US3178543A
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US3234803A
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US3278710A
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US3345485A
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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) | 1973-02-16 | 1973-08-18 | 1974-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-16 | 1977-08-18 | 1978-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-16 | 1981-08-18 | 1982-02-17 | $7700.00 | Window Closed / Lapsed |