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Dragline excavator (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Dragline excavator" in English language version.

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6espacenet.com
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1narrowgaugeandindustrial.co.uk
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1uow.edu.au
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1books.google.com
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archive.org

  • "A walking excavator". The Literary Digest: 249. 29 July 1916.

books.google.com

canadaeast.com

dailygleaner.canadaeast.com

espacenet.com

worldwide.espacenet.com

  • US 1095464, Martinson, Oscar J., "Excavator-Tractor.", issued 5 May 1914, assigned to Monighan Machine Co. 
  • US 1101459, Martinson, Oscar J., "Tractor.", issued 23 June 1914, assigned to Monighan Machine Co. 
  • US 1101460, Martinson, Oscar J., "Excavator-Tractor.", issued 23 June 1914, assigned to Monighan Machine Co. 
  • US 1591764, Martinson, Oscar J., "Traction Mechanism.", issued 6 July 1926, assigned to Monighan Machine Co. 
  • US 1627984, Martinson, Oscar J., "Traction Machine.", issued 10 May 1927, assigned to Monighan Machine Co. 
  • GB 110458, Bowtell, William John, "Improvements in or relating to Luffing Cranes.", issued 25 October 1917, assigned to Ransomes & Rapier Ltd. 

hecltd.com

little-mountain.com

mining-technology.com

narrowgaugeandindustrial.co.uk

uow.edu.au

ro.uow.edu.au

web.archive.org