The Komatsu G25 Crawler & Caterpillar 2-Ton Crawler
On top is the Komatsu G25
On the bottom the Caterpillar 2-Ton.
Pay special attention to the track-support structures. Looks to me like it was a direct copy. No kidding! I am sure someone will point out differences and … sure details will be different but IMO we can say pretty well that it is a copy.
The Komatsu G40 Crawler & Best 30
Komatsu engineers ventured abroad to get a glimpse of an actual bulldozer. In 1935, they released a copy of the Best 30, designated the G40.
On top is the Komatsu G40.
On the bottom the Best 30.
The Komatsu G40 Bulldozer
On the bottom is the testing of the prototype (or something nearly so)
Obviously there are quite a bit of difference between the mechanism that lifts the blade.