Patent Explorer
Browse, filter, and analyze 2 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US2920159A | Backflow prevention and alarm device | Backflow Engineering & Equipme | Expired / Lapsed | 1956-12-03 | 1960-01-05 | 1976-12-03 | 0.0 yrs | 0 | |
| US2773251A | Backflow prevention and alarm device | Backflow Engineering & Equipme | Expired / Lapsed | 1952-11-24 | 1956-12-04 | 1972-11-24 | 0.0 yrs | 0 |