US3026437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron discharge device
Assignee: Rauland Borg Corp
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Filing: 1958-10-20
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Granted: 1962-03-20
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Expires: 1978-10-20
Abstract
No abstract record available.
Inventors
- 👤 Wilfrid F Niklas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:26
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/50; H01J31/501
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
103 words
AN IMAGE CONVERTER COMPRISING: AN EVACUATED ENVELOPE HAVING A CYLINDRICALLY SHAPED CENTRAL SECTION OF PREDETERMINED CROSS-SECTIONAL DIMENSIONS, AN END SECTION OF REDUCED CROSS-SECTIONAL DIMENSIONS AND A SHOULDER PORTION OF INSULATING MATERIAL INTER-CONNECTING THESE SECTIONS; A PHOTOEMISSIVE CATHODE WITHIN SAID ENVELOPE; A FLUORESCENT SCREEN DISPOSED IN SAID REDUCED END SECTION; A FOCUSING AND ACCELERATING ELECTRODE SYSTEM INTERMEDIATE SAID PHOTOEMMISIVE CATHODE AND SAID FLUORESCENT SCREEN COMPRISING A FOCUS ELECTRODE CONSISTING OF AN INTERNAL CONDUCTIVE COATING ON SAID CENTRAL SECTION OF SAID ENVELOPE AND AN ANODE ENCOMPASSING SAID FLUORESCENT SCEEN; AND A NON-REFLECTIVE SEMI-CONDUCTIVE COATING ON SAID SHOULDER PORTION INTER-CONNECTING SAID FOCUS ELECTRODE AND SAID ANODE.
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) | 1965-03-19 | 1965-09-18 | 1966-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-19 | 1969-09-18 | 1970-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-19 | 1973-09-18 | 1974-03-20 | $7700.00 | Window Closed / Lapsed |