US2942568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of junction transistors
Assignee: GTE Sylvania Inc
•
Filing: 1954-10-15
•
Granted: 1960-06-28
•
Expires: 1974-10-15
Abstract
No abstract record available.
Inventors
- 👤 Hamilton George
- 👤 Robert M Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:23
CPC Classifications
C; C30; C30B; C30B31/00; C30B31/04; H; H10; H10P; H10P95/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2449986A
Cited
US2521687A
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US2708255A
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US2708646A
Cited
DE868354C
Cited
FR1088286A
Cited
BE525280A
Cited
US2791524A
Cited
US2756483A
Cited
US2697052A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |