Document Type and Number:
Japanese Patent JPS57102912
Kind Code:
U
Application Number:
JP18216880U
Publication Date:
June 24, 1982
Filing Date:
December 17, 1980
Export Citation:
International Classes:
A01B63/10; A01B63/00; (IPC1-7): A01B63/10
Domestic Patent References:
| JP52122214B | ||||
| JP56093112B | ||||
| JP55090211B | ||||
| JPS4943407B1 | 1974-11-21 |