JPS63135927U - - Google Patents

Info

Publication number

JPS63135927U

JPS63135927U JP2971687U JP2971687U JPS63135927U JP S63135927 U JPS63135927 U JP S63135927U JP 2971687 U JP2971687 U JP 2971687U JP 2971687 U JP2971687 U JP 2971687U JP S63135927 U JPS63135927 U JP S63135927U

Authority

JP

Japan

Prior art keywords

helmet

shield portion

variable transmittance

transparent

transparent element

Prior art date

1987-02-27

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

• 238000002834 transmittance Methods 0.000 claims description 3
• 230000005611 electricity Effects 0.000 claims 1

Cited By (1)