Patent US8995278B1 successfully refreshed from Google Patents.
US1678824A
Expired / Lapsed
US
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Electric-current rectifier
Assignee: RUBEN RECTIFIER Corp
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Filing: 1925-04-16
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Granted: 1928-07-31
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Expires: 1945-04-16
Abstract
No abstract record available.
Inventors
- 👤 Ruben Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:57
CPC Classifications
H; H10; H10P; H10P95/00; H10P95/80; H10D; H10D62/00; H10D62/80; H10P10/00
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) | 1931-07-31 | 1932-01-30 | 1932-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-07-31 | 1936-01-30 | 1936-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-07-31 | 1940-01-30 | 1940-07-31 | $7700.00 | Window Closed / Lapsed |