JPS5813842A - エキスパンシヨンジヨイント - Google Patents

Info

Publication number

JPS5813842A

JPS5813842A JP11315481A JP11315481A JPS5813842A JP S5813842 A JPS5813842 A JP S5813842A JP 11315481 A JP11315481 A JP 11315481A JP 11315481 A JP11315481 A JP 11315481A JP S5813842 A JPS5813842 A JP S5813842A

Authority

JP

Japan

Prior art keywords

cover member

locking

cover

members

piece

Prior art date

1981-07-20

Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Granted

Links

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