US2609428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Base electrodes for semiconductor devices
Assignee: RCA Corp
•
Filing: 1949-08-31
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Granted: 1952-09-02
•
Expires: 1969-08-31
Abstract
No abstract record available.
Inventors
- 👤 Harold B Law
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:27
CPC Classifications
H; H10; H10D; H10D99/00; H10D48/00; H10D48/30; H10D48/32; H10D48/34; H10D48/345
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1949383A
Cited
GB572138A
Cited
US2503479A
Cited
US2476323A
Cited
US2560594A
Cited
US2553491A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-02 | 1956-03-03 | 1956-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-02 | 1960-03-03 | 1960-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-02 | 1964-03-03 | 1964-09-02 | $7700.00 | Window Closed / Lapsed |