US2787744A
Expired / Lapsed
US
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Temperature stabilized transistor
Assignee: Boeing Co
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Filing: 1953-04-20
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Granted: 1957-04-02
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Expires: 1973-04-20
Abstract
No abstract record available.
Inventors
- 👤 Robert L Brock
- 👤 John E Maynard
- 👤 Robert C Mccarthy
- 👤 Thomas N Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:54
CPC Classifications
H; H10; H10W; H10W40/00; H10W40/70; H10D; H10D99/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-01 | 1960-10-01 | 1961-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-01 | 1964-10-01 | 1965-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-01 | 1968-10-01 | 1969-04-02 | $7700.00 | Window Closed / Lapsed |