US3441699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arc control apparatus for load-break switches
Assignee: Erickson Electrical Equipment Co
•
Filing: 1968-05-27
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Granted: 1969-04-29
•
Expires: 1988-05-27
Abstract
No abstract record available.
Inventors
- 👤 John W Erickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:22
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/70; H01H33/76; H01H33/77; H01H33/02; H01H33/04; H01H33/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2160681A
Cited
US2308026A
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US2244061A
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US2707218A
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US2840671A
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BE638963A
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DE1203344B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |