US2572801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical rectifier
Assignee: GTE Sylvania Inc
•
Filing: 1943-06-23
•
Granted: 1951-10-23
•
Expires: 1963-06-23
Abstract
No abstract record available.
Inventors
- 👤 Casellini Ezio Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:56
CPC Classifications
H; H10; H10P; H10P95/00; H10W; H10W72/00; H10W76/00; H10W76/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE18579E
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US962262A
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US1052355A
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US1586672A
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GB551209A
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US2419561A
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US2430028A
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US2432116A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-22 | 1955-04-23 | 1955-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-22 | 1959-04-23 | 1959-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-22 | 1963-04-23 | 1963-10-23 | $7700.00 | Window Closed / Lapsed |