US3236933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enclosed pressure-gas insulated busbar system
Assignee: BBC Brown Boveri AG Germany
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Filing: 1962-10-18
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Granted: 1966-02-22
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Expires: 1982-10-18
Abstract
No abstract record available.
Inventors
- 👤 Frowein Egbertus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:11
CPC Classifications
H; H02; H02G; H02G5/00; H02G5/06; H02G5/063
Claims Analysis
Total Claims: 0
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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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |