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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokyo Gas Co Ltd
Original Assignee
Tokyo Gas Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP46071509Aexternal-prioritypatent/JPS5119263B2/ja
Priority claimed from JP47031016Aexternal-prioritypatent/JPS4919647A/ja
Priority claimed from JP4442772Aexternal-prioritypatent/JPS555013B2/ja
Application filed by Tokyo Gas Co LtdfiledCriticalTokyo Gas Co Ltd
Publication of FR2155943A2publicationCriticalpatent/FR2155943A2/fr
Application grantedgrantedCritical
Publication of FR2155943B2publicationCriticalpatent/FR2155943B2/fr