Patent US3598722A successfully refreshed from Google Patents.
US1865512A
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Electric current rectifier construction
Assignee: BBC Brown Boveri AG Germany
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Filing: 1930-05-20
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Granted: 1932-07-05
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Expires: 1950-05-20
Abstract
No abstract record available.
Inventors
- 👤 Gaudenzi Arthur
- 👤 Kobel Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:01
CPC Classifications
H; H01; H01J; H01J13/00; H01J13/02; H01J13/04; H01J13/22; H01J2893/00; H01J2893/0072; H01J2893/0073; H01J2893/0074
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1935-07-05 | 1936-01-04 | 1936-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-07-05 | 1940-01-04 | 1940-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-07-05 | 1944-01-04 | 1944-07-05 | $7700.00 | Window Closed / Lapsed |