Nova Patents
US2590352A

Ditch digger

Abstract

This record has no abstract on file.

US2590352A, drawing sheet 1
Sheet 1 of 2

Term

Term ended

Expired 25 March 1969, 57.5 years ago.

  1. Priority and filed
  2. Granted
  3. Expired
  4. Today

2 sheets

  1. Sheet 1
  2. Sheet 2