US2602211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rectifier and method of making it
Assignee: AT&T Inc
•
Filing: 1945-12-29
•
Granted: 1952-07-08
•
Expires: 1965-12-29
Abstract
No abstract record available.
Inventors
- 👤 Jack H Scaff
- 👤 Henry C Theuerer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:21
CPC Classifications
C; C22; C22B; C22B41/00; H; H10; H10P; H10P95/00; Y; Y10; Y10S; Y10S420/00; Y10S420/903
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US912726A
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US1128552A
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US1211754A
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US1665936A
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US1708571A
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US1908188A
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US2209712A
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US2198843A
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US2402839A
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US2395259A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-08 | 1956-01-07 | 1956-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-08 | 1960-01-07 | 1960-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-08 | 1964-01-07 | 1964-07-08 | $7700.00 | Window Closed / Lapsed |