US2898499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission secondary emission dynode structure
Assignee: Westinghouse Electric Corp
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Filing: 1956-05-23
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Granted: 1959-08-04
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Expires: 1976-05-23
Abstract
No abstract record available.
Inventors
- 👤 Ernest J Sternglass
- 👤 Walter A Feibelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:40
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/023; H01J43/00; H01J43/04; H01J43/06; H01J43/10; Y; Y10; Y10S; Y10S313/00; Y10S313/07
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) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |