PK-ENR
PK-ENR Patent applications | ||
Patent application number | Title | Published |
---|---|---|
20130048053 | SOLAR COLLECTOR HAVING FRESNEL MIRRORS - The present invention relates to a solar collector ( | 02-28-2013 |
20120237370 | ENGINE HAVING ROTARY PISTONS - The present invention relates to a mechanism ( | 09-20-2012 |