Railway draft appliances – Cushioned – Radially movable
Reexamination Certificate
2006-06-27
2006-06-27
Ahmed, Shamim (Department: 1765)
Railway draft appliances
Cushioned
Radially movable
C213S041000, C213S047000, C213S049000, C430S005000, C174S258000, C174S260000, C174S262000, C029S829000, C029S830000, C029S846000
Reexamination Certificate
active
07066344
ABSTRACT:
A mask film includes a base material, a parting layer and a non-parting portion placed on the base material. Accordingly, an optimum adhesion strength of the mask film and a prepreg sheet can be maintained, and peeling between the mask film and prepreg sheet can be prevented. Further, by preventing the fusing adhesion between the mask film and prepreg sheet due to heat generated when forming penetration holes, a circuit board having an excellent quality is obtained.
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Echigo Fumio
Kishimoto Kunio
Kondo Toshikazu
Nakamura Shinji
Takenaka Toshiaki
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