US2582850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photocell
Assignee: RCA Corp
•
Filing: 1949-03-03
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Granted: 1952-01-15
•
Expires: 1969-03-03
Abstract
No abstract record available.
Inventors
- 👤 Rose Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:55
CPC Classifications
H; H10; H10F; H10F30/00; H10F30/20; H10F30/21; H10F30/22; H10F30/2205; H10P; H10P95/00; Y; Y10; Y10S; Y10S148/00; Y10S148/064
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A PHOTO-CONDUCTIVE CELL COMPRISING A FIRST AND A SECOND BODY OF CADMIUM SULPHIDE, SAID BODIES CONTACTING EACH OTHER, AND TWO METALLIC ELECTRODES, EACH BEING IN CONTACT WITH ONE OF SAID BODIES.
Claim 2
Dependent Claim
31 words
A PHOTO-CONDUCTIVE CELL COMPRISING A FIRST AND A SECOND BODY OF CADMIUM SULPHIDE, SAID BODIES CONTACTING EACH OTHER, AND TWO METALLIC ELECTRODES, EACH BEING IN CONTACT WITH ONE OF SAID BODIES.
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) | 1955-01-14 | 1955-07-16 | 1956-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-14 | 1959-07-16 | 1960-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-14 | 1963-07-16 | 1964-01-15 | $7700.00 | Window Closed / Lapsed |