Similar
YAW SYSTEM MODIFICATION - 100 KW KILOWATT WTG WIND TURBINE GENERATOR
Practical points in the use of X-ray and high-frequency currents (1909) (14777467983)
COMPONENTS OF SOLAR TORCH IGNITER
60-inch cyclotron. Experimental target assembly. Photo taken 4/14/1949. 60"-215 Principal Investigator/Project: Crocker Lab/60-inch
CHEVROLET CYLINDER HEAD, NASA Technology Images
A person using a machine to sharpe a piece of metal. Sharpen knife craft, work.
Patent drawing - NorthropSwitchblade PatentDrawing 1 Public domain image
Patent drawing - Collection of United States patents granted to Thomas A. Edison, 1869-1884 (1869) (14569990378) Public domain image
Tihanyi Kálmán "Radioskop"
Patent drawing - Original Hydril Annular BOP Patent2 Public domain image
Резюме
Patent Drawing of the Original Annular-type Blowout Preventer, by Hydril Corporation,
U.S. Patent 2,609,836 (1952).
Тэги
Дата
16/08/1946
Источник
USPTO
Ссылка
Информация о правах
public domain