Title:
【考案の名称】硬度可変マスト
Document Type and Number:
Japanese Patent JPS60100291
Kind Code:
U
Inventors:
Shirai Mitsuru
Application Number:
JP19304683U
Publication Date:
July 08, 1985
Filing Date:
December 16, 1983
Export Citation:
International Classes:
E04H12/00; B63B15/00; B63B15/02; (IPC1-7): B63B15/00; E04H12/00
Domestic Patent References:
| JPS57130884A | 1982-08-13 | |||
| JPS5760989A | 1982-04-13 | |||
| JPS55114679A | 1980-09-04 |