Letro Products, Inc.
15Patents
0Active
15Granted
31Portfolio score
Filing activity: May 16, 1994 → Jun 25, 2002
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6099091A | Traction enhanced wheel apparatus | Fixed Constructions | 146 | Expired |
| US5933899A | Low pressure automatic swimming pool cleaner | Fixed Constructions | 63 | Expired |
| USD376450S | Swimming pool cleaner | General | 52 | Expired |
| USD471330S1 | Automatic swimming pool cleaner | General | 48 | Expired |
| USD421512S | Automatic swimming pool cleaner | General | 45 | Expired |
| US5893188A | Automatic swimming pool cleaner | Fixed Constructions | 45 | Expired |
| US5603135A | Pool cleaner with replaceable mast | Fixed Constructions | 39 | Expired |
| US6003184A | Automatic swimming pool cleaner | Fixed Constructions | 39 | Expired |
| US6193885A | Pool cleaner debris bag | Performing Operations; Transporting | 27 | Expired |
| US6158464A | Low pressure back-up valve for pool cleaner | Emerging Cross-Sectional Technologies | 17 | Expired |
| US6423217B1 | Pool cleaner having vortex drive tube | Fixed Constructions | 14 | Expired |
| US6357478B1 | Suction flow regulator | Emerging Cross-Sectional Technologies | 10 | Expired |
| USD379693S | Pool cleaner debris bag | General | 9 | Expired |
| US6035879A | Automatic fill valve assembly | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6379542B1 | Pool cleaner with righting weight assembly | Fixed Constructions | 6 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.