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Backflow Engineering & Equipme

Backflow E
Active Patents
0
Total Holdings
2

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US2920159A Backflow prevention and alarm device Expired / Lapsed 1956-12-03 1960-01-05 0 Details
US2773251A Backflow prevention and alarm device Expired / Lapsed 1952-11-24 1956-12-04 0 Details