US2739244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infrared sensitive tube
Assignee: Individual
•
Filing: 1951-05-22
•
Granted: 1956-03-20
•
Expires: 1971-05-22
Abstract
No abstract record available.
Inventors
- 👤 Sheldon Edward Emanuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:40
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/50; H01J31/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A COMPOSITE DEVICE COMPRISING A CONTINUOUS AND ELECTRICALLY CONDUCTING LAYER, LUMINESCENT MEANS COMPRISING A PLURALITY OF DIFFERENT FROM EACH OTHER PHOSPHORS, LUMINESCENT LIGHT EMITTED BY ONE OF SAID PHOSPHORS PRODUCING EMISSION OF THE LUMINESCENT LIGHT FROM ANOTHER ONE OF SAID PHOSPHORS, AND A LIGHT TRANSPARENT, CONTINUOUS AND ELECTRICALLY CONDUCTING LAYER EXTENDING CONTINUOUSLY OVER A MAJOR PORTION OF THE SURFACE OF SAID LUMINESCENT MEANS.
Claim 2
Dependent Claim
63 words
A COMPOSITE DEVICE COMPRISING A CONTINUOUS AND ELECTRICALLY CONDUCTING LAYER, LUMINESCENT MEANS COMPRISING A PLURALITY OF DIFFERENT FROM EACH OTHER PHOSPHORS, LUMINESCENT LIGHT EMITTED BY ONE OF SAID PHOSPHORS PRODUCING EMISSION OF THE LUMINESCENT LIGHT FROM ANOTHER ONE OF SAID PHOSPHORS, AND A LIGHT TRANSPARENT, CONTINUOUS AND ELECTRICALLY CONDUCTING LAYER EXTENDING CONTINUOUSLY OVER A MAJOR PORTION OF THE SURFACE OF SAID LUMINESCENT MEANS.
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-20 | 1959-09-19 | 1960-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-20 | 1963-09-19 | 1964-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-20 | 1967-09-19 | 1968-03-20 | $7700.00 | Window Closed / Lapsed |