Document Type and Number:
Japanese Patent JPS54139372
Kind Code:
U
Application Number:
JP3404678U
Publication Date:
September 27, 1979
Filing Date:
March 14, 1978
Export Citation:
International Classes:
B04B11/00; B04B1/02; (IPC1-7): B04B1/02
Domestic Patent References:
| JPS307787Y1 | ||||
| JP44000996A | ||||
| JPS4416542Y1 | 1969-07-17 |