JPS63178710U - - Google Patents

Info

Publication number

JPS63178710U

JPS63178710U JP6978787U JP6978787U JPS63178710U JP S63178710 U JPS63178710 U JP S63178710U JP 6978787 U JP6978787 U JP 6978787U JP 6978787 U JP6978787 U JP 6978787U JP S63178710 U JPS63178710 U JP S63178710U

Authority

JP

Japan

Prior art keywords

heating chamber

lamp

opening window

convex portion

lamp cover

Prior art date

1987-05-11

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.)

Pending

Links

• Espacenet
• Global Dossier
• Discuss

• 238000010438 heat treatment Methods 0.000 claims description 9
• 239000011521 glass Substances 0.000 description 1
• 239000000463 material Substances 0.000 description 1