发明授权
- 专利标题： Portable, electrically energized, cordless grass trimmer
- 专利标题（中）： 便携式，电动，无绳草修剪机
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申请号： US934744申请日： 1978-08-21
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公开(公告)号： US4237610A公开(公告)日： 1980-12-09
- 发明人: Robert Bradus , Thomas J. Howard, Jr. , John W. Miller
- 申请人： Robert Bradus , Thomas J. Howard, Jr. , John W. Miller
- 申请人地址： MD Towson
- 专利权人： Black and Decker Manufacturing Company
- 当前专利权人： Black and Decker Manufacturing Company
- 当前专利权人地址： MD Towson
- 主分类号： A01D34/416
- IPC分类号： A01D34/416 ; A01D35/26 ; A01D55/18
摘要：
A portable, electrically energized, cordless grass trimmer device is disclosed having a rotatable hub which is adapted to alternatively mount, for substantially balanced rotation therewith, a flexible cutter strip and a line cutter and mechanical counterbalance.
公开/授权文献
- US6020387A Low density polymers and methods of making and using same 公开/授权日：2000-02-01
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