[PSUBS-MAILIST] Pressure Regulation/Compensation Patent

[NeophyteSG@aol.com]

Similar principle to what I intend to use on my externals and ballast tanks. 

http://l2.espacenet.com/espacenet/bnsviewer?CY=ep&LG=en&DB=EPD&PN=US6273019&ID
=US+++6273019B1+I+

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