| 摘要 |
<p>1,215,017. Mower blade. DAYCO CORP. 15 Dec., 1967 [24 March, 1967], No. 57008/67. Addition to 1,198,518 Heading A1F. A central mounting portion 13 is embedded in the blade 11 and is made of a material (e.g. plastics or steel) more rigid than the flexible elastomeric material used for the ends containing the cutting edges 15. The blade is mounted on the mower shaft at the central aperture 16 formed in portion 13.</p> |
