ASTM F 239 : 1981 : R1987
Withdrawn
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Specification for Nickel Alloy Cathode Sleeves for Electron Devices (Withdrawn 1992)
Withdrawn date
08-01-1991
Published date
12-31-2010
Covers sleeves, seamless, welded and drawn, lockseam, or lapseam, for use as indirectly heated oxide-coated cathodes in electron devices.
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