Document Type and Number:
Japanese Patent JPS4922654
Kind Code:
A
More Like This:
Application Number:
JP6428972A
Publication Date:
February 28, 1974
Filing Date:
June 27, 1972
Export Citation:
International Classes:
B04B3/00
Domestic Patent References:
| JPH058193U | 1993-02-05 | |||
| JP41015236A |