US2914678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent device
Assignee: RCA Corp
•
Filing: 1954-12-20
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Granted: 1959-11-24
•
Expires: 1974-12-20
Abstract
No abstract record available.
Inventors
- 👤 Kazan Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:02
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H03; H03K; H03K17/00; H03K17/51; H03K17/78
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A RADIATION EMITTING DEVICE COMPRISING AN ELECTROLEUMINESCENT ELEMEMT AND TWO SPACED PHOTOCONDUCTIVE ELEMENTS, SAID THREE ELEMENTS BEING ELECTRICALLY CONNECTED IN SERIES WITH EACH OTHER, AND MEANS INCLUDING A PLURALITY OF LIGHT SOURCES FOR INDEPENDENTLY ILLUMINATING SAID PHOTOCONDUCTIVE ELEMENTS.
Claim 2
Dependent Claim
38 words
A RADIATION EMITTING DEVICE COMPRISING AN ELECTROLEUMINESCENT ELEMEMT AND TWO SPACED PHOTOCONDUCTIVE ELEMENTS, SAID THREE ELEMENTS BEING ELECTRICALLY CONNECTED IN SERIES WITH EACH OTHER, AND MEANS INCLUDING A PLURALITY OF LIGHT SOURCES FOR INDEPENDENTLY ILLUMINATING SAID PHOTOCONDUCTIVE ELEMENTS.
References Cited (Backward Citations)
GB713916A
Cited
US2698915A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |