|
BG42296A1
|
|
Passive solar system
|
|
BG41272A1
|
|
Parallel device for multiplying in final fields
|
|
BG41441A1
|
|
In series- parallel device for multiplying in finite fields
|
|
BG39934A1
|
|
Passive sun energy system
|
|
BG39366A1
|
|
Sun evaporator- crystallizer
|
|
BG41170A1
|
|
Alloy for welding
|
|
BG35862A1
|
|
Mechanical distributor of fluid stream
|
|
BG35127A1
|
|
Ageous accumulating heat- changer
|
|
BG32878A1
|
|
Method for fluorit flotation
|
|
BG32511A1
|
|
Absorber for sun collector
|
|
BG30567A1
|
|
Four stroke internal combustion engine with opposite moving pistons with double expansion
|
|
BG29821A1
|
|
Apparatus for temperature measuring
|
