| 摘要 |
<p>1,228,547. Cutting apparatus. CINCINNATI MILLING MACHINE CO. 16 April, 1969 [6 May, 1968], No. 56957/69. Divided out of 1,228,543. Heading B4B. The subject-matter of this Specification is substantially the same as that described in Specification 1,228,543 but the claims are concerned with a method of forming a pattern in the material by first piercing the latter with the cutting edge formed on the end of the cutting blade thereby eliminating the necessity for an entrance cut into the material.</p> |
