US2730638A
Expired / Lapsed
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Photoconductive electrode
Assignee: TDK Micronas GmbH
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Filing: 1952-06-06
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Granted: 1956-01-10
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Expires: 1972-06-06
Abstract
No abstract record available.
Inventors
- 👤 Robert J Cashman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:14
CPC Classifications
H; H02; H02H; H02H7/00; H02H7/10; H02H7/12; H02H7/1209; C; C01; C01G; C01G17/00; H01; H01B; H01B1/00; H01B1/06; H01B1/10; H01J; H01J9/00; H01J9/20; H01J9/233; H10; H10F; H10F99/00; H10P; H10P95/00; Y; Y10; 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) | 1959-01-09 | 1959-07-11 | 1960-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-09 | 1963-07-11 | 1964-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-09 | 1967-07-11 | 1968-01-10 | $7700.00 | Window Closed / Lapsed |