Patent US2858471A successfully refreshed from Google Patents.
US2858471A
Expired / Lapsed
US
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Anode for electron discharge device
Assignee: Westinghouse Electric Corp
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Filing: 1955-04-01
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Granted: 1958-10-28
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Expires: 1975-04-01
Abstract
No abstract record available.
Inventors
- 👤 Gillies Wallace
- 👤 Clifford E Horner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:48
CPC Classifications
H; H01; H01J; H01J19/00; H01J19/28; H01J2893/00; H01J2893/0001; H01J2893/0012; H01J2893/0013
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
104 words
IN AN ELECTRON DISCHARGE DEVICE WITHIN AN AT LEAST PARTIALLY EVACUATED ENVELOPE, THE COMBINATION OF A CATHODE AND AN ANODE, SAID ANODE INCLUDING A CUP REMBER AND A DISK MEMBER, A BRAZE BETWEEN SAID CUP MEMBER AND SAID DISK MEMBER, A LAYER OF PROTECTIVE MATERIAL COATING SAID BRAZE, SAID PROTECTIVE MATERIAL BEING OPERABLE TO REDUCE THE VAPORIZATION OF THE SURFACE LAYER OF SAID BRAZE DURING MANUFACTURE AND OPERATION OF THE DEVICE, THE MATERIAL OF SAID BRAZE BEING SELECTED FROM THE GROUP CONSISTING OF COPPER, SILVER, COPPER ALLOYS AND SILVER ALLOYS, SAID PROTECTIVE MATERIAL BEING SELECTED FROM THE GROUP CONSISTING OF NICKEL, CHROMIUM AND RHODIUM.
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) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |