AdTechAnswers

US2014031 Патенты

APPARATUS FOR CLEARING CESSPOOLS OF ICE A : 6, 9 HARRY W. RANDALL INVENTOR BY UNITED STATES PATENT OFFICE 2,0.4,031 APPARATUS FOR CLEARNG CESSPOOLS OF CE Harry W. Randall, St. Johnsbury, Wt. Application July 18, 1934, Serial No. 735,860 10 Claims. (C. 82-2)

Знаков текста: 11 253.

Открыть первоисточник →

Патенты в корпусе →