US3465158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Forward biased phototransistor with exposed base
Assignee: Bunker Ramo Corp
•
Filing: 1966-11-14
•
Granted: 1969-09-02
•
Expires: 1986-11-14
Abstract
No abstract record available.
Inventors
- 👤 Roy P Foerster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:37
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/78; H03K17/795; H03K17/7955; H10; H10F; H10F99/00; H10D; H10D99/00; H10F30/00; H10F30/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2948815A
Cited
DE1185956B
Cited
US3324297A
Cited
US3305689A
Cited
US3304431A
Cited
US3334236A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-01 | 1973-03-03 | 1973-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-01 | 1977-03-03 | 1977-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-01 | 1981-03-03 | 1981-09-02 | $7700.00 | Window Closed / Lapsed |