US3155471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry air system for isolated phase bus
Assignee: ABB Inc USA
•
Filing: 1959-05-01
•
Granted: 1964-11-03
•
Expires: 1979-05-01
Abstract
No abstract record available.
Inventors
- 👤 Walter H Schymik
- 👤 Joseph V Mcnulty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:41
CPC Classifications
H; H02; H02G; H02G5/00; H02G5/10; H01; H01H; H01H33/00; H01H33/02; H01H33/53; H01H33/56; H01H33/562
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191126859A
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US1541147A
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US1866611A
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US2190168A
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US2320093A
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US2563042A
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US2775642A
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US2699837A
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US2884855A
Cited
US2882998A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-03 | 1968-05-04 | 1968-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-03 | 1972-05-04 | 1972-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-03 | 1976-05-04 | 1976-11-03 | $7700.00 | Window Closed / Lapsed |