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US 4,054,946 AGranted
Electron source of a single crystal of lanthanum hexaboride emitting surface of (110) crystal plane
AssigneeBell Telephone Laboratories, Incorporated
InventorsStephen Duncan Ferris, David Charles Joy, Harry John Leamy, Louis David Longinotti, Paul Herman Schmidt
Life of this patent
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Abstract
An electron source using a single lanthanum hexaboride crystal oriented so the emitting surface is defined by a {110} crystal plane.
Claims5
An electron emission device comprising a lanthanum hexaboride single crystal characterized in that the emitting surface of said single crystal is defined by a {110} crystal plane.
Dependencies are inferred from the claim text.