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.)
Shinmaywa Industries Ltd
Original Assignee
Shin Meiva Industry 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
Application filed by Shin Meiva Industry LtdfiledCriticalShin Meiva Industry Ltd
Priority to JP869676ApriorityCriticalpatent/JPS5291540A/en
Publication of JPS5291540ApublicationCriticalpatent/JPS5291540A/en
PURPOSE: To arrange an expandable bag filled with air near a water surface within a side wall of a pool, and prevent the pool from brakage caused by freezing.
COPYRIGHT: (C)1977,JPO&Japio
JP869676A1976-01-281976-01-28Method and apparatus for preventing pool from breakage caused by freez ing
PendingJPS5291540A
(en)