Excavating Machine | Patent No. 2,762,141

Earthworking Scraper | Patent No. 3,183,609

The R.G. LeTourneau Patent Collection: No Big Problems

Electric Wheel | Patent No. 2,726,726

Scraper | Patent No. 1,470,853

Land Clearing Machine | Patent No. 2,959,201

Mobile Sea Platform | Patent No. 3,011,467

Two-wheel Tractor | Patent No. 2,454,070