US2755406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent lamp
Assignee: GTE Sylvania Inc
•
Filing: 1952-08-20
•
Granted: 1956-07-17
•
Expires: 1972-08-20
Abstract
No abstract record available.
Inventors
- 👤 Burns Laurence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:35
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/02; H05B33/04; H05B33/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
AN ELECTROLUMINESCENT LAMP COMPRISING TWO CLOSELYSPACED ELECTRODES, THE SPACE DIRECTLY BETWEEN SAID ELECTRODES BEING FILLED WITH A COMPRESSED POWDER OF ELECTROLUMINESCENT PHOSPHOR PARTICLES.
Claim 2
Dependent Claim
23 words
AN ELECTROLUMINESCENT LAMP COMPRISING TWO CLOSELYSPACED ELECTRODES, THE SPACE DIRECTLY BETWEEN SAID ELECTRODES BEING FILLED WITH A COMPRESSED POWDER OF ELECTROLUMINESCENT PHOSPHOR PARTICLES.
References Cited (Backward Citations)
US2624857A
Cited
US2566349A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-17 | 1960-01-16 | 1960-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-17 | 1964-01-16 | 1964-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-17 | 1968-01-16 | 1968-07-17 | $7700.00 | Window Closed / Lapsed |