Patent US4559041A successfully refreshed from Google Patents.
US2687484A
Expired / Lapsed
US
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Photoconductive target
Assignee: RCA Corp
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Filing: 1951-02-24
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Granted: 1954-08-24
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Expires: 1971-02-24
Abstract
No abstract record available.
Inventors
- 👤 Paul K Weimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:39
CPC Classifications
H; H10; H10D; H10D48/00; H10D48/01; H10D48/04; H10D48/043; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/39; H01J29/45; H10P; H10P14/00; H10P14/20; H10P14/22; H10P14/34; H10P14/3402; Y; Y10; Y10S; Y10S148/00; Y10S148/064; Y10S148/072; Y10S257/00; Y10S257/917; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265
Claims Analysis
Total Claims: 0
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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) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |